run-tests: make sure GREP_OPTIONS isn't set
This can interfere with test output, especially for options like --color.
[ original upstream message ]
--- a/tests/run-tests.py Thu Mar 11 15:32:24 2010 +0100
+++ b/tests/run-tests.py Mon Mar 22 01:36:12 2010 -0400
@@ -842,6 +842,7 @@
os.environ["EMAIL"] = "Foo Bar <foo.bar@example.com>"
os.environ['CDPATH'] = ''
os.environ['COLUMNS'] = '80'
+ os.environ['GREP_OPTIONS'] = ''
os.environ['http_proxy'] = ''
global TESTDIR, HGTMP, INST, BINDIR, PYTHONDIR, COVERAGE_FILE