* Fix OCCT and OpenCV patching during build
The inclusion of the `--directory` flag here isn't necessary because of
how `PATCH_COMMAND` applies patches. In fact this causes issues when
trying to build from an archive, `--directory` seems to imply `--index`
and thus this patch only succeeds if you're inside an initialized git
repo. If you simply use the archive without a git repo the build fails
at the patch step.
* Alter patch command based on git repo status
`git apply` has different behavior when inside a git repo vs not. If
we're in a git repo we need to fully quality the path for these patches,
otherwise we can omit the directory flag.
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Co-authored-by: Joe Palazzolo <joe@joepalazzolo.net>
b82d13a5a9