Escape special characters in *_shell.bat.

Windows uses ^ for escaping since \ is taken as the path separator.

The characters are in the commented-out value of the MSYS variable. If
the command were uncommented, cmd.exe would complain about syntax
errors.
conemu: new package
pacman: Removed fix for upstream bug that is now fixed
Merge pull request #125 from elieux/pacman-fs42736-fixed

pacman: Removed fix for upstream bug that is now fixed
filesystem: Added MSYSTEM to the default prompt
Merge pull request #126 from elieux/prompt-msystem

filesystem: Added MSYSTEM to the default prompt
filesystem: Fixed PKGBUILD (broken in previous commit)
Merge pull request #127 from elieux/prompt-msystem-v2

filesystem: Fixed PKGBUILD (broken in previous commit)
pacman: Update to git SHA [6889f48]
msys2-runtime: Update to git SHA [8211578]
groff: Update to 1.22.3
msys2-unlocker: Started splash screen (WIP)

Turning this into a bit of a do-it-all thing, may make
it like busybox, so the behaviour depends on argv[0].
msys2-unlocker: Load splash animation frames as gpBitmaps (WIP)

Includes a gimp script to convert all xcfs in "splash/" to jpgs and write out a
(windres) resource file (splash_frames.rc2) and header file (splash_frames.h)
grep: Update to 2.21
msys2-unlocker: Added Inconsolate-g.otf
conemu-git: buildable finally
conemu-git: remove the annoying warning
conemu-git: Updated config to set MSYSTEM
conemu-git: remove search bar to be more like mintty
msy2-runtime: Update to git SHA [9bd5a78]