url: make logginghttphandler compatible with Python 2.7.6 There wasn't a usable hook point in httplib, so we have to replace connect() to wrap the socket before self._tunnel().

util: make safehasattr() a pycompat function So safehasattr() can be imported by utils.* modules. util.safehasattr() still remains as an alias since it is pretty basic utility available for years. On current Python 3, the builtin hasattr() should have no problem.

util: drop util.Abort in favor of error.Abort (API) IIRC, error.Abort exists since Mercurial 1.2, so it should be pretty easy for extensions authors to update their code. .. api:: The util.Abort alias has been removed. Use error.Abort.

test-bundle2-exchange: use error.Abort instead of util.Abort

util: use error.Abort instead of local alias

rcutil: directly call win32.executablepath() Since it isn't supported on POSIX platform, we don't need to double the compatibility layers.

directaccess: do not abort by 'ff...' hash Since the 'ff...' hash should never be hidden, we can just ignore it.

hgweb: don't responsd to api requests unless feature is enabled Per discussion at https://phab.mercurial-scm.org/D2834, new URLs in hgweb can conflict with subrepos and virtual repos. This may prevent access to repos in certain paths or having certain names. Until we have a workaround for this, let's not serve requests for "api/" URLs unless the feature is enabled. Differential Revision: https://phab.mercurial-scm.org/D2936

fancyopts: prevent mutation of the default value in customopts Differential Revision: https://phab.mercurial-scm.org/D2937

fancyopts: fix rendering of customopt defaults in help text Differential Revision: https://phab.mercurial-scm.org/D2935