parsers: fix a memleak, and add a clearcaches method to the index
This change also fixes a nasty memory leak: previously, self->caches
was not being freed.
The new clearcaches method lets us benchmark with finer granularity,
as it lets us separate the cost of loading a revlog index from those
of populating and accessing the cache data structures.
hghave: remove symlink test made useless by
ac0da5caebec
tests: disable progress estimate in test-debugbuilddag.t
If the command takes long enough, including 'estimate' in the format
will add some more data to the progress bar output, and make the test
fail. See e.g.
https://buildd.debian.org/status/fetch.php?pkg=mercurial&arch=kfreebsd-amd64&ver=2.1.2-2&stamp=
1333493711
ui: swallow EBADF on stderr
ui.write_err already swallows EPIPE and EIO if a write to stderr fails.
On Mac OS X at least, a write to a closed file descriptor results in
EBADF. Before this patch, hg would exit with status 1 if a write to
stderr failed during startup (e.g. while trying to print a warning about
not finding an extension):
$ ./hg --config extensions.foo= version 2>&-; echo $?
1
With this patch, it correctly swallows stderr and continues to run the
command:
$ ./hg --config extensions.foo= version 2>&-
Mercurial Distributed SCM (version 2.1)
...