Avoid inclusion of inttypes.h

 * Instead of inttypes.h it is sufficient to include stdint.h (see http://stackoverflow.com/questions/7597025/difference-between-stdint-h-and-inttypes-h) which is also available on MS Visual Sudio 2010 and later
 * Fix compilation with Borland C/C++ (free command line tools) 5.5: stdint.h and __typeof() are not available
 * Fix compilation with LCC 2.4.1: stdint.h and __typeof() are not available
 * Fix compilation with Open WATCOM 1.3: stdint.h is available, but __typeof() is not