With Martin's help, I have just fixed an egregious error in
Stylesheets/bin/transformtei, which is a bad problem, but was an easy
fix. (The problem was that it would always fail to find the default
p5subset.xml if you started from a directory outside the Stylesheets/
tree.)

I have pushed the change to the 'dev' branch. But this is a serious
enough problem that the fix should be release, in Martin's humble
opinion. (Mine, too.)

We probably don't want to release the _other_ changes that have been
made to dev since the last release. (At least, Martin doesn't. I
kinda like them. :-)

So we think the steps should be to cherry-pick that particular fix
into the release branch.

 1. git checkout released
 2. git cherry-pick c615d52
 3. change VERSION to 7.50.1
 4. run tests, pray there are no errors
 5. git commit    # to get the new VERSION file
 6. git push
 7. Hope Stylesheets released branch build works on Jenkins
 8. Read TCW 22 and figure out how to actually release the new
    package.
 9. Read TCW 22 and figure out how to release the new oXygen package
    (may need to kick Jenkins to get it to build, but at least on
    Martin's Jenkins it should go on its own after the TEIP5-relased
    job completes successfully)
10. Update TCW 22 as needed to cover this process. (We don't think
    there has been a separate Stylesheets release for a long time.)