The attached patch:

1) fixes a bug with the 'fpga loadb' command

The bug is in calculating the config data size - 4 bytes of length info were being read as signed chars, casted to long, shifted and added. The cast to long was doing sign extension and causing an incorrect result if a byte was greater than 0x80. For me this caused the fpga load to end early and time out waiting for the hardware completion.

2) removes compilation warnings about using __FUNCTION__ concatenated with strings

3) changes the fpga loadb to always print the file header info during a load.

I realize this patch is a mishmash - hopefully it's helpful to someone.