git-gui: Revert "Don't modify CREDITS-FILE if it hasn't changed." This reverts commit 92446aba47b0e0db28f7b858ea387efcca30ab44.
git-gui: Revert "Don't modify CREDITS-FILE if it hasn't changed."
This reverts commit 92446aba47b0e0db28f7b858ea387efcca30ab44.

Too many users have complained about the credits generator in
git-gui, so I'm backing the entire thing out.

Signed-off-by: Shawn O. Pearce <f01032651c12a22b2103346ba96b3b6b231f9d3c@spearce.org>

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