subrepo: silence git output when ui.quiet is set

subrepo: show git command with --debug Also removing the clutter of --no-pager, since none of these commands use the pager.

subrepo: speed up git push logic In many common cases where the subrepo is up to date with the remote repo, hg push will only need to run one git-branch command to see that nothing needs to be pushed.

subrepo: use subprocess.Popen without the shell As well as simplifying the code, this makes subprocess calls about 25% faster. Tested on a couple linux boxes. python -mtimeit -s'import subprocess' 'subprocess.Popen( "git version", shell=True, stdout=subprocess.PIPE).wait()' python -mtimeit -s'import subprocess' 'subprocess.Popen( ["git","version"], stdout=subprocess.PIPE).wait()'

subrepo: treat git error code 1 as success At least status, commit, merge-base, and diff all return 1 when not failing.

subrepo: gitsubrepo should inherit from abstractsubrepo

subrepo: initialize subrepo relative default paths relative to their root

merge with stable

bookmarks: create undo.bookmarks using repo.opener instead of util.copyfile This more closely matches how the other undo files are created, and we don't care about settings permissions or times on the file, which can fail if the user running hg doesn't own the file.

archival: don't set gzip filename header when there's no filename This mainly affects hgweb, which can generate tar.gz archives without filenames. Without this change, the header would be set to ".gz", which can confuse Safari into extracting the file and renaming it to "gz" when "Open 'safe' files after downloading" is enabled. file(1) before: hg-crew-5e51254ad4d4.tar.gz: gzip compressed data, was ".gz", last modified: Thu Dec 2 11:46:20 2010, max compression after: hg-crew-5e51254ad4d4.tar.gz: gzip compressed data, last modified: Thu Dec 2 11:46:20 2010, max compression

build: don't delete precious version information on 'make clean' setup.py rebuilds version information if it's locally available, regardless if file already exists.

patch: write .rej files without rewriting EOLs Do not pass reject file content to patchfile.writelines() to: - Avoid line endings transformations - Avoid polluting overriding implementations with unrelated data. They should override write_rej() to deal or ignore reject files properly. Bug report, analysis and original patch and test by Shun-ichi GOTO <shunichi.goto@gmail.com>

record: move copystat() hack out of util.copyfile() and into record b2410ed2cbe9 updated copyfile to also copy over atimes and mtimes. That behavior is specifically to trick editors into thinking files that hg record has modified haven't changed. We don't really care about preserving times in the general case.

util: make atomicfiles closable

subrepo: drop arguments unsupported by old git