use search rather than match to skip possible text output by envsetup

[Roland Haas]

the attached patch avoid anchoring the regex pattern used to look for rsync's version in the command output. This is useful for systems where envsetup (for whatever reason, eg because the user has extra modules loaded, or .bashrc is not fully quiet ...) produces output.

Keyword:

[Roland Haas]

Applied as rev 1902 of simfactoyr.