[Bug-apl] compile error location of malloc.h

[Xiao-Yong Jin]

    LApack.cc:21:20: fatal error: malloc.h: No such file or directory
     #include "malloc.h"
                    ^
    compilation terminated.

Under OS X, it’s in /usr/include/malloc/malloc.h

Is it actually needed?  The code compiles fine without the #include.

Best,
Xiao-Yong