NSDebug.m: Small extension for allocation debugging

[Roland Schwingel]

Hi...

This patch hangs around for quite a while now adding a new function to 
NSDebug.m allowing to set own functioncallbacks permitting to write own 
debugallocation code for tracking down memleaks... It is especially 
useful when working on windows when using gnustep als dll, where you 
have no other chance to set own functions (except you would do really 
ugly things)...

This patch supplies a new function (taken from .m file):
/**
* This functions allows to set own function backcalls for debugging 
allocation
* of objects. Useful if you intend to write your own objectalloc.
*/
void
GSSetDebugAllocationFunctions(void (*newAddObjectFunc)(Class c, id 
o),void (*newRemoveObjectFunc)(Class c, id o))

So whenever an object is allocated or deallocated these supplied 
functions get called instead of the default onces. If you supply NULL 
for both parameters the default GNUstep functions for this task are 
enabled again... This is well tested and runs for quite a while now here...

Roland

NSDebug_patch.tar.bz2
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