run-tests: use regex when searching for $HGPORT in test output
This prevents spurious errors when a changeset hash happens to match
the port number. Before, this invocation gave a test failure:
$ ./run-tests.py test-log.t --port 24427
ERROR: /home/mg/src/mercurial-crew/tests/test-log.t output changed
--- /home/mg/src/mercurial-crew/tests/test-log.t
+++ /home/mg/src/mercurial-crew/tests/test-log.t.err
@@ -626,12 +626,12 @@
$ hg log -b default
changeset: 2:c3a4f03cc9a7
- parent: 0:24427303d56f
+ parent: 0:$HGPORT303d56f
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: commit on default
...
[ original upstream message ]
536c1797202d57efb77bea098e10968ff01602ce universal_scheme
ba000e29ecf3b8df09e0fd363a78cabbe3c2a78f cvs_scheme
1fe48bf82d056f1ece05baccab888357c10c5ab8 r0.1
2e930f84224222ad6514a3c5dc6e00350e199e92 very_cvs
99dc49c5bcfba9d5b412c5fa6d0bf3ba20d68df1 hgkw_standalone_setup
15e8cd7f5295728b089fc8ba236c0f079572fb1d nohook
0c8b7e5c25a6b9a0d2782eaa3748eb546f5a254f archive
0000000000000000000000000000000000000000 universal_scheme
0000000000000000000000000000000000000000 cvs_scheme
0000000000000000000000000000000000000000 r0.1
0000000000000000000000000000000000000000 very_cvs
0000000000000000000000000000000000000000 hgkw_standalone_setup
0000000000000000000000000000000000000000 nohook
0000000000000000000000000000000000000000 archive