Fix specfile for nogui executable

Support new nogui executable in specfile as dedicated sub-package.
Fail CMake if building WX without GTK libraries.
JIT: revert accuracy improvement to mftb

Fixes a few games (e.g. Karaoke Revolution Party) for reasons explained in the
comments.
DolphinWX: Eliminate some memory leaks

Since the menus aren't actually assigned a parent, they would not be freed by wx. Plus, these should have initially been constructed on the stack in the first place.
Technically any time someone right-clicked the game list they would be leaking memory.
FrameAui: Allow notebook tabs to be rearranged in the parent notebook.
Merge pull request #1527 from FioraAeterna/mftbfix

JIT: revert accuracy improvement to mftb
Merge pull request #1530 from lioncash/ui-leaks

DolphinWX: Eliminate some memory leaks
Merge pull request #1525 from KAMiKAZOW/patch-2

Fix specfile for nogui executable
Merge pull request #1526 from rohit-n/build-wx-gtk

Fail CMake if building WX without GTK libraries.
Merge pull request #1531 from lioncash/notebook

FrameAui: Allow notebook tabs to be rearranged in the parent notebook.