fileset: add tests of generated working copy states

parsers: avoid leaking several PyObjects in index_stats Found with cpychecker.

parsers: don't leak a reference to raise_revlog_error on success Found with cpychecker.

parsers: don't leak a tuple in pack_dirstate Spotted with cpychecker.

parsers.c: fix a memory leak in index_commonancestorsheads Spotted with cpychecker.

parsers: avoid leaking obj in index_ancestors PySequence_GetItem returns a new reference. Found with cpychecker.

parsers: don't leak references to sys et al in check_python_version Found with cpychecker.

parsers: fix leak of err when asciilower hits a unicode decode error This is one of many errors detected in parsers.c by cpychecker[1]. I haven't gone through all of them yet. 1: https://gcc-python-plugin.readthedocs.org/en/latest/index.html

largefiles: use 'default' path for pulling largefiles, not 'default-push' The put parameter has been unused since day 0.

osx: patch .pax.gz files in pkg bundles so they extract as root (issue4081) The packages has to be installed by root but they would be installed insecurely, owned by the uid of the unprivileged user that made the package. The local user with that uid could thus write to /usr/local/bin/hg . bdist_mpkg calls out to pax to create the package, but pax do apparently not have the power to control what it is writing. Instead, patch the pax files and set their uid fields to 0 before they are wrapped in a dmg.