patch, 2 partsFix Git GUI in Git for Windows 2.x

With the switch to 2.x, Git for Windows started relying on MSys2 instead of MSys. This also implies that we now have the `cygpath` tool that was formerly used to determine whether we're running Cygwin or MinGW/MSys.

Another issue: the code behind Repository>Create Desktop Icon generated a `.lnk` file that fails to launch the Git GUI in Git for Windows 2.x.

This topic branch fixes both bugs.

Johannes Schindelin (2):
  git-gui: fix detection of Cygwin
  git-gui (Windows): use git-gui.exe in `Create Desktop Shortcut`

 git-gui.sh       | 10 ++++------
 lib/shortcut.tcl | 14 ++++++++++----
 2 files changed, 14 insertions(+), 10 deletions(-)