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
...
$ hg init outer
$ cd outer
hg debugsub with no remapping
$ echo 'sub = http://example.net/libfoo' > .hgsub
$ hg add .hgsub
$ hg debugsub
path sub
source http://example.net/libfoo
revision
hg debugsub with remapping
$ echo '[subpaths]' > .hg/hgrc
$ printf 'http://example.net/lib(.*) = C:\\libs\\\\1-lib\\\n' >> .hg/hgrc
$ hg debugsub
path sub
source C:\libs\foo-lib\
revision
test bad subpaths pattern
$ cat > .hg/hgrc <<EOF
> [subpaths]
> .* = \1
> EOF
$ hg debugsub
abort: bad subrepository pattern in $TESTTMP/outer/.hg/hgrc:2: invalid group reference
[255]