patch: add tests for our new patch program

strchr: add tests (thanks amavect)

merge

zones.rc: date -m is gone, fix tests.

git: enable fixed lca test

git: add new lca test

lca(a, b) is currently failing, so it is commented out until fixed.

fix die function

exit expects exactly one argument.

cpp: remove line directives from expected output

These paths contain the full path of the regress directory, which will
vary depending on where it is checked out.

The line directives are not under test, so pass -P to cpp to skip
them.

zones: date -m is gone

git: add test for lca algorithm

cmd/git: fix typos

Some stale file and duplicate sourcing.

git: add tests for adding files with absolute paths.

cmd/git: add tests for export/import

git: add merge tests, clean up basic tests

recurse in mk clean

cmd/git: finish renaming test.rc

oops, left the old one around.

add basic git tests

make test.rc less verbose

add test tests.

date: check for expected time ranges.