Doxygen updates
Copied latest version of strlcpy.c and strlcpy.h from mxml repository - fixes the issue w/
gcc predefining them on OS/X Mavericks.

In ErrorDragon.hxx, replaced all instances of Int_t with int32_t - necessary to compile
with USE_ROOT not defined.

In Dragon.hxx, added a typedef cons char Option_t when USE_ROOT not defined.
TAtomicMass.* now matches library version.
- Wrapped all #include <iostream> in an #ifndef __MAEKCINT__
- changed all remaining #include <stdint.h> to #include "utils/IntTypes.h"