setup: calculate version more correctly
The old calculation code failed to properly identify revs that
weren't tagged, leaving us with a version of "unknown" most of the
time during development.
mq: improve qqueue message with patches applied (
issue3036)
subrepo, hghave: use "svn --version --quiet" to determine version number
svn --version --quiet is implemented since svn 0.14.1 (August 2002)
and prints just the version number, not the long output (21 lines)
of "svn --version".
Additionally I expect this output format to be more stable, at least
it is not changed with different translations.
subrepo: setting LC_MESSAGES only works if LC_ALL is empty or unset
For example LC_ALL=de_DE.utf-8 would cause the version check to fail,
because "svn, Version 1.6.12 (r955767)" with a capital "V" will be printed.
Using "svn --version --quiet" would only print the version number, but then
matching other messages, e.g. "Committed revision" would fail.