Delete the gtypes.h file

The definition of Goffset is moved into gfile.h, all other types are folded into the code.

added 10 commits

• 67870077...9414cc63 - 4 commits from branch poppler:master
• 27954f7d - Move definition of type Goffset from gtypes.h to gfile.h
• 51bb4676 - Replace Guchar by unsigned char
• b7503eb3 - Replace Gushort by unsigned short
• 22053d55 - Replace Guint by unsigned int
• cc51c218 - Replace Gulong by unsigned long
• ef3ef702 - Remove the file gtypes.h completely

Compare with previous version

enabled an automatic merge when the pipeline for ef3ef702 succeeds

merged