Strict conformance to IEEE Std 1003.1-2001
List additional features in usage message (-v)
Added slideshow support
Added dirty flag to img struct
Added own bool type
Made XFLAGS & XLIBS macros only
Removed Makefile.netbsd
Shortened additional features section
Much nicer handling of compile-time features

- *_SUPPORT enabled in config.h
- XLIBS helper app prints lib flags needed for current settings
Updated screenshot to reflect new title bar
Renamed XLIBS to config, added -D/-l options
Updated doc
270/90 = 3
Use win_t member in img_t & tns_t instead of parameters
Simplified config.c
make use of EXIT_ macros
Merge commit '3a81af4'
Make use of EXIT_* macros (2)
Added STREQ macro
Fix include for ssize_t