code cleanup: compile with clang and quiet some warnings.

intern/guardedalloc/cpp/mallocn.cpp

@@ -29,33 +29,33 @@
 #include "../MEM_guardedalloc.h"
 
 /* not default but can be used when needing to set a string */
-void *operator new(size_t size, const char *str)
+void *operator new(size_t size, const char *str) throw(std::bad_alloc)
 {
 	return MEM_mallocN(size, str);
 }
-void *operator new[](size_t size, const char *str)
+void *operator new[](size_t size, const char *str) throw(std::bad_alloc)
 {
 	return MEM_mallocN(size, str);
 }
 
 
-void *operator new(size_t size)
+void *operator new(size_t size) throw(std::bad_alloc)
 {
 	return MEM_mallocN(size, "C++/anonymous");
 }
-void *operator new[](size_t size)
+void *operator new[](size_t size) throw(std::bad_alloc)
 {
 	return MEM_mallocN(size, "C++/anonymous[]");
 }
 
 
-void operator delete(void *p)
+void operator delete(void *p) throw()
 {
 	/* delete NULL is valid in c++ */
 	if (p)
 		MEM_freeN(p);
 }
-void operator delete[](void *p)
+void operator delete[](void *p) throw()
 {
 	/* delete NULL is valid in c++ */
 	if (p)