bdiff: use Py_ssize_t instead of int Reduces the conversion warnings mercurial/bdiff.c(61) : warning C4244: '=' : conversion from '__int64' to 'int', possible loss of data mercurial/bdiff.c(307) : warning C4244: 'function' : conversion from 'Py_ssize_t' to 'int', possible loss of data mercurial/bdiff.c(308) : warning C4244: 'function' : conversion from 'Py_ssize_t' to 'int', possible loss of data mercurial/bdiff.c(362) : warning C4244: '+=' : conversion from '__int64' to 'int', possible loss of data mercurial/bdiff.c(380) : warning C4244: '=' : conversion from '__int64' to 'int', possible loss of data mercurial/bdiff.c(381) : warning C4244: 'function' : conversion from '__int64' to 'uint32_t', possible loss of data mercurial/bdiff.c(382) : warning C4244: 'function' : conversion from '__int64' to 'uint32_t', possible loss of data mercurial/bdiff.c(416) : warning C4244: '=' : conversion from 'Py_ssize_t' to 'int', possible loss of data to mercurial/bdiff.c(383) : warning C4244: 'function' : conversion from '__int64' to 'uint32_t', possible loss of data mercurial/bdiff.c(384) : warning C4244: 'function' : conversion from '__int64' to 'uint32_t', possible loss of data mercurial/bdiff.c(385) : warning C4244: 'function' : conversion from 'Py_ssize_t' to 'uint32_t', possible loss of data on the three putbe32() calls in the function bdiff when compiling for Windows x64 target using the Microsoft compiler.

doc: add detail explanation for 'present()' predicate of revsets

osutil: handle deletion race with readdir/stat (issue3463)

merge with stable

branchcache: backout 0311a6abd38a

dispatch: try and identify third-party extensions as sources of tracebacks Extension authors should explicitly declare their supported hg versions and include a buglink attribute in their extension. In the event that a traceback occurs, we'll identify the least-recently-tested extensionas the most likely source of the defect and suggest the user disable that extension. Packagers should make every effort to ship hg versions from exact tags, or with as few modifications as possible so that the versioning can work appropriately.

hgext: mark all first-party extensions as such

bookmarks: test that bare update forwards active bookmark

keyword: intentionally ignore check-code warning about unwrapped ui message

help: include bookmarks in 'help revisions' and simplify wording