implemented context menu when right clicking on an online histogram in the
upper TreeView, also eliminated duplicate entries for online histograms in
the lower ListView.

The new tabbed qui has been committed to CVS.  There are still problems, and
bugs, and not all the buttons have been activated.  Work continues.

Committed MainFrame.cxx/.h with a fix for the problem of segmentation faults
while updating online histograms.  The problem was the pointers to the
histograms needed to be changed in the TGLVContainers when the histograms
were deleted and recreated due to being updated.  The main difficulty was
getting a handle on which TGLVEntry matched which histogram, when the
histogram pointers were obtained from the TPad and not the TGLVContainer. 
Anyway, you can now view online histograms without the program crashing.

The peak find panel has been added to MIDASviewer.  Click on the speed
button to open the panel.  Click the Find button to find peaks, and do a fit
if the attempt to fit check box is checked.  Fitting seems slow, but that is
all internal to ROOT.

Online histograms can now be collected in named groups.  Each group is
displayed in its own TCanvas window, instead of tabs within one window, but
hopefully that will come.  Right now, I see no way to implement TGTab's
within a TCanvas window, but the 8pi viewer does it, so it must be possible.
 A check is done so each group can contain only one instance of a histogram.

The bottom canvas window has been removed.  The superfluous buttons have
been removed.  No response, yet, to my question in the ROOT forums regarding
inserting PeakFind in the pre-defined context menu when right-clicking on a
histogram.

PeakFind has been added to the context menu when right clicking on a drawn
histogram.  There are still problems to overcome:  the PeakFind panel needs
to communicate back to the gui that it has been deleted (to overcome a
segmentation violation error when the pointer is deleted a second time);
multiple PeakFind menu items appear when the canvas is split into multiple
pads (even though it is not added if already in the menu???); still no way
found to get a context menu for the folder icons (Files, Online, Groups);
need to figure out a way to let the user choose the active pad, so he/she
can pick any drawn histogram for peak finding (currently it only works with
the latest drawn histogram).  Also, Clear All online histograms has been
added to the main menu (it used to be a button).

Added:
  right click on filename (under Offline) brings up "Close file" option;
  automatic creation of TEMP folder (under Offline);
  right click on Groups folder brings up "Make new group" option
    which brings up a text dialog requesting a group name, which must
    be a new name;
  right click on a group name brings up "Delete group" and "Draw" options,
    "Delete group" does just that, while "Draw" automatically creates a
    new canvas divided into #pads = #histograms in the group and draws 
    the histograms one per pad;
  right click on a histogram brings up the context menu with added option
    "Add to group", which in turn brings up the list of existing groups

Added:  current online host name is now displayed in dialog box
Fixed:  online histograms can now be added and displayed in groups

Save and Restore are now implemented in TTriumfFileGUI (but without xml, for
now).  The save file format is simple keyword lookup, e.g.,

# this is a comment         --> comments begin with #
FILE filename               --> opens data file (.root or .hbook)
HOST hostname               --> opens online socket
GROUP groupname             --> makes group
HISTOGRAM source histname   --> puts histogram (from source) into this group
...
GROUP groupname             --> makes another group
HISTOGRAM source histname   --> puts histogram into this group
...

The case of the keywords are not important, but the order is important, in
that the source for any histograms to be inserted into a group must be
listed above the group.

The Draw Group option has been repaired, so a new canvas is always opened
and the window title contains the group name.  I still have to check that
the online histograms in this canvas are refreshed properly.

Modified the Open file menu so there is only one menu item (instead of .root
and .hbook) but the open file dialog allows you to choose the file type.

The problem with refreshing online histograms when drawn using the Draw
Group option has been fixed.

The run number is extracted from the file name of .root data files and
appended to the title for histogram plots.  If the file name contains any
numeric digits, it will be interpreted as the run number.  There should be
no adverse ramifications if the file name contains no digits.

You can now save and restore as many times as you like in a single session.

Fixed: do not make a group named "-1" when TGTextDialog returns "-1" when
canceled; rationalize the host name and port number code; do not use hot
keys "O" and "C" in TGTextDialog as I could not enter an "O" or a "C" into
the text area (probably some conflict with X-Win32, but just as well to get
rid of it).

Added right click on online hostname to choose "Disconnect online".

Moved groups to top of the list displayed in the gui.

If the user entered save file name does not contain ".save" it will
be appended to the filename.

One can now select multiple histograms by holding down the CTRL key while
left clicking the mouse.  After selecting the histograms, keep holding down
the CTRL key and right click the mouse to bring up the context menu to add
these histograms to a previously created group.  Usefulness is somewhat
limited so far, but more functionality will be added later.

Right click on Offline folder opens the file dialog.

Right click on Online folder opens the hostname dialog.

If only one group exists, you will not be asked to choose the group when adding items to a group.

Command line argument change:
 -h (or -H) followed by nothing shows program usage
 -hhostname or -hhostname:port connect to analyzer on given host (and port)
 -rsavefile restores savefile

Offline items added to a group are new removed from the group if the
file is closed.

Offline item titles are now displayed after the name if different than
the item name.

"Run# number" added to the item title if the filename contains a runnumber.

Command line argument change:
   the space between -h and hostname is optional
   the space between -r and filename is optional

The save file is now an xml file validated with roody.dtd

When saving or restoring, if you enter a filename without an extension,
.xml will be appended.  The previous save file format is no longer
supported.

New files:  RoodyXML.h, RoodyXML.cxx, roody.dtd

Fixed up group problems when an online file is located in a folder.

Makefile modified to support libxml2.

> I have some comments on roody :
> 
> [snip]
> If you agree upon these requests, let me know if you like me to implement some 
> of these features.

These all seem like good suggestions and it is fine with me if you want
to work on the code.