git-gui: Squash populate_{push,fetch}_menu to populate_remotes_menu

The meat of the routines is now separated to add_fetch_entry() and
add_push_entry(). This refactoring will allow easy implementation of adding
individual remotes later.

Signed-off-by: Petr Baudis <petr.baudis@novartis.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2 files changed