tests: fix glob pattern for dynamic timer alignment
The number of space characters varies depending on the number of digits of the
timer, making some tests fail on slow machines in an unintended way:
```diff
--- /build/mercurial-6.1/tests/test-merge-halt.t
+++ /build/mercurial-6.1/tests/test-merge-halt.t.err
@@ -210,6 +210,6 @@
merge halted after failed merge (see hg resolve)
[240]
$ hg shelve --list
- default (* ago) changes to: foo (glob)
+ default (11s ago) changes to: foo
$ hg unshelve --abort
unshelve of 'default' aborted
ERROR: test-merge-halt.t output changed
```
Differential Revision: https://phab.mercurial-scm.org/D12381
#require test-repo execbit
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "`dirname "$TESTDIR"`"
look for python scripts without the execute bit
$ testrepohg files 'set:**.py and not exec() and grep(r"^#!.*?python")'
[1]
look for python scripts with execute bit but not shebang
$ testrepohg files 'set:**.py and exec() and not grep(r"^#!.*?python")'
[1]
look for shell scripts with execute bit but not shebang
$ testrepohg files 'set:**.sh and exec() and not grep(r"^#!.*(ba)?sh")'
[1]
look for non scripts with no shebang
$ testrepohg files 'set:exec() and not **.sh and not **.py and not grep(r"^#!")'
[1]