Slight change to the rpm package parsing.  Assume that either the version or release has a number. (even though rpm does not require that)
Bumb version to 0.9.4.1
Merge branch 'release/0.9.4.1' into develop
gitman: add support for external scripting. closes #1014
gitman: can't hash 0 length files. closes #1015
gitman lookup non-existent uid fix closes #893
allow showing diffs in downgrades: closes #940
option to ignore mtime changes in rpms. closes #1016
gitman: make a separate option for holdup diffs. closes #1018