git-gui: Convert merge dialog to use class system

I've found that the class code makes it a whole lot easier to create
more complex GUI code, especially the dialogs.  So before I make any
major improvements to the merge dialog's interface I'm going to first
switch it to use the class system, so the code is slightly cleaner.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
1 file changed
tree: 1b8c774b688d6c7cb8f0fcb0f8301a2621d4c922
  1. lib/
  2. .gitignore
  3. git-gui.sh
  4. GIT-VERSION-GEN
  5. Makefile