PATCH: Use long long in _itoa and _itowa if PREFER_LONG_LONG is defined

[Roland McGrath]

The term "target" doesn't make sense for glibc, which is not a compiler.
Say "A sysdeps _itoa.h file" or the like.

It doesn't really make any sense to have to define separate magic macros
for itoa and itowa.  I think you can just make _itowa.h include <_itoa.h>
and use the _ITOA_* macros instead.


Thanks,
Roland