In case we have a git clone from Linux that is accessed via cygwin git
the files executable status will be derived from the file content (shebang)
and won't match the git repo, leading to a initially dirty tree.
This can be worked around by setting "core.filemode=false", but let's try
to match the cygwin permissions with the in-repo permissions so this isn't
needed.
While at it, also adjust the repository URL in the `update-patches.sh`
script: We no longer call it msys2/Cygwin but msys2/msys2-runtime.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Provides and conflicts with msys2-runtime, so can be used to replace it if wanted.
Keep this as a separate package to test for regressions in cygwin
and to have (in theory) a runtime that supports 32bit in the repo.
There is no guarantee for how long we are going to keep this.
