libcap 1.91 and 1.90

* added file capability support in line with proposed 2.3 kernel patch
* reinstated manual pages for file capabilities
* made sucap work better (modified command line syntax)
* altered format of the output for getcap (one line per file)
* made cap_free work on strings returned by cap_to_text (as specified
  in manual!)

libcap 1.02

* fixed kernel version matching to always fail when attempting to
  use an incompatible version of the library with the current kernel

libcap 1.01

* bug fixes from peeterj.
* documentation fix regarding where binaries are installed
