After pulling the newest version of midas, our compilation would fail on
bk_create, with the error:

frontend.cpp:954: error: invalid conversion from ‘DWORD**’ to ‘void**’
frontend.cpp:954: error:   initializing argument 4 of ‘void bk_create(void*,
const char*, WORD, void**)’

I noticed a change to the function in midas.c that changes the type of pdata
from a pointer to a double pointer, and changes 

      *((void **) pdata) = pbk + 1;
to
      *pdata = pbk + 1;

The fix is simple. In each call to bk_create, I changed it to:

bk_create(pevent, bk_name, TID_DWORD, (void**)&pdata); 

I suggest updating the documentation. Also, why the change? Does it add some
improvement in efficiency?