[PATCH] JIT_SUPPORT branch: fix compile warning around JVMTI Deallocate call

[Maynard J. <may...@us...>]

My version of gcc (4.1.2 SLES 10 SP1) prints this warning message when I 
compile the JIT_SUPPORT branch of OProfile:
     "libjvmti_oprofile.c:119 (also, lines 120 and 122): warning: pointer
        targets in passing argument 2 of '(*jvmti)->Deallocate' differ
        in signedness"

The attached patch casts the 2nd arg in all three Deallocate calls to 
(unsigned char *).

Regards,
-Maynard