allows <objects/objc-malloc.h> to be include in non-ObjC files, i.e. C
files.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1380 72102866-910b-0410-8b05-ffd578937521
now objc-malloc.h cannot be included in .c files, only .m files.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1348 72102866-910b-0410-8b05-ffd578937521