Changes summary:
- Support digital signatures in binary packages.
- Use full path name to tar.
- Fix ``pkg_add -u'' for packages without dependencies.
- Add ``-U'' and ``-I'' options to pkg_create.
- Close some memory leaks.
- Add ``-n'' argument to pkg_info to show needed packages.
- Fix pkg_info to not FTP unneccessarily
- Improve version number handling:
- recognition of "pl" ("patchlevel") and "rc" ("release candidate")
strings
- recognition of '_' and "pl" as pseudonyms for '.' (1.2pl2 == 1.2.2)
- handle alphabetic characters properly (1.2e == 1.2.5)
- 64-bit integers are used internally for each component of the version
number.
- Various internal cleanups, bugfixes, and API tweaks.