Dumped the old implementation. Started with a more simple approach.

external/Squirrel/sqmem.cpp

@@ -2,8 +2,10 @@
 	see copyright notice in squirrel.h
 */
 #include "sqpcheader.h"
+#ifndef SQ_EXCLUDE_DEFAULT_MEMFUNCTIONS
 void *sq_vm_malloc(SQUnsignedInteger size){	return malloc(size); }
 
 void *sq_vm_realloc(void *p, SQUnsignedInteger oldsize, SQUnsignedInteger size){ return realloc(p, size); }
 
 void sq_vm_free(void *p, SQUnsignedInteger size){	free(p); }
+#endif