Printing size_t correctly

[UnitedMarsupials-zz]

Throughout the code variables of type size_t are printed as long (%ld). This is incorrect in two ways:

• long is signed, whereas size_t is not
• long may not be the same width as size_t -- in particular, on i386 (32-bit) systems long is usually a 64-bit integer, while size_t is 32 bit

The correct format specification for size_t is %zu. For ssize_t it is %zd. Pull requests are messy, so I'll just leave an old-fashioned patch-file here. Please, merge it in. Thank you!

patch-warnings

[danielrh]

Hmm... is %zu standard on all compilers--even weird ones like MSVC?
http://stackoverflow.com/questions/15610053/correct-printf-format-specifier-for-size-t-zu-or-iu
it seems not...
I just casted them to longs and used %lu for now