Fix a bunch of rather silly bugs in psys_vercmp()
Fix a bunch of rather silly bugs in psys_vercmp()

Found these while testing libpsys on openSUSE 11.2. These mistakes
meant that psys_vercmp() absolutely not worked before. I wonder why
I haven't run to problems with this long before?...

denisw/libpsys,denisw/libpsys,denisw/libpsys