mpatch: use Py_ssize_t for string length

mpatch: use Py_ssize_t Eliminates mpatch.c(73) : warning C4244: 'return' : conversion from '__int64' to 'int', possible loss of data mpatch.c(299) : warning C4244: 'function' : conversion from 'Py_ssize_t' to 'int', possible loss of data mpatch.c(321) : warning C4244: '=' : conversion from 'Py_ssize_t' to 'int', possible loss of data mpatch.c(335) : warning C4244: 'function' : conversion from 'Py_ssize_t' to 'int', possible loss of data mpatch.c(346) : warning C4244: 'function' : conversion from 'Py_ssize_t' to 'int', possible loss of data when compiling for Windows x64 target using the Microsoft compiler.

subrepo: make subrepo.subrepo(<not a subrepo path>) fail Until now, when calling subrepo.subrepo with a path at which there is no subrepo, a "nullstate" tuple would be returned. However, this is not very useful (the tuple can't really be used for creating a subrepo), so we'd just as soon have the function just fail, and leave it up to the caller to decide what to do. The motivation for doing this now is to simplify the solution for (issue3056).

merge with stable

hgweb: use ui.nontty to disable all cooked I/O

progress: use ui._isatty

pager: use ui._isatty infrastructure

ui: add _isatty method to easily disable cooked I/O

bdiff: check and cast first parameter value on putbe32() calls Eliminates 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 when compiling for Windows x64 target using the Microsoft compiler.

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.