To create the installer you need to follow the next steps:
- install the latest version of msys2: http://msys2.github.io/
- launch msys2_shell.bat and update it with pacman -Syu, you will need to
relaunch msys2_shell.bat after updating it
- install git: pacman -S git
- clone gedit: git clone git://git.gnome.org/gedit
- cd gedit/win32
- edit make-gedit-installer and set the right version of gedit
- ./make-gedit-installer.bat