gitk: Remove mc parameter from proc show_error
gitk: Remove mc parameter from proc show_error

This is a better fix for 8d849957d81fc0480a52570d66cc3c2a688ecb1b.

This new fix makes the strings "Sorry, gitk cannot run..." and "OK"
translatable and the string "mc" not translatable. It will take effect
the next time `make update-po` is run.

msgcat is now imported before the Tcl/Tk version check so that the mc
function is available even if the version check fails. This should not
be a problem because msgcat and ::msgcat::mc were officially added in
Tcl 8.1 (released April 29, 1999) and we are not trying to support
versions of Tcl older than that.

Signed-off-by: Alex Henrie <139449a27381270391752f9e0993fccac55fea0e@gmail.com>
Signed-off-by: Paul Mackerras <19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git