run-tests: install data files correctly
In 68964567e406 we began installing some data files in PREFIX/share.
When preparing to run the tests, run-tests.py uses --home="" in order
to work around home being set in a ~/.pydistutils.cfg file. This
somehow overwrites the --prefix option.
The result was that the share/ directory was installed in the top of
the Mercurial source tree.
#!/bin/sh
"$TESTDIR/hghave" symlink || exit 80
rm -rf a
hg init a
cd a
ln -s foo link
hg add link
hg ci -mbad link
hg rm link
hg ci -mok
hg diff -g -r 0:1 > bad.patch
hg up 0
hg import --no-commit bad.patch
hg st