hgk: support the old way of getting the current Ttk theme (
issue3808)
It seems like the API has changed somewhere around 8.5.7, so the preferred way
of getting the current theme is now [ttk::style theme use], while the
deprecated (but still working) is $::ttk::currentTheme.
addremove: don't perform m.exact/rel until needed
Moves the m.exact and m.rel calls within the conditionals they are used in.
On a large repo this brings addremove from 7.1 seconds down to 6.3 (13%).
addremove: don't call lexists, isdir, and islink
The dirstate walk results contain the stat information for each path, so we
don't need to query it again. On a large repo this makes addremove go from
8.35 seconds to 7.1 (15%).
addremove: only query dirstate once per path
Previously the addremove code queried the dirstate 4 times per path. Now it
only does so once. On a large repo this brings addremove from 9.5 seconds
to 8.35 seconds (12%).