Blender Git Loki

Updated mallocn.c MEM_check_memory_integrity was casting
a string as an int and it was causing a warning.
I changed it to check to see if the string == 0
return 0 else return 1.

The only thing that called this function was memtest.c and it
had outdated code, so I fixed that...
was calling MEM_set_error_stream updated to
MEM_set_error_callback

Kent