i18n-ru: spellcheck

i18n-ru: glossary synchronized with wiki, still requires fixing

i18n-ru: mq translated

i18n-ru: largefiles strings fixed

merge with stable

merge: check filename case collision between changesets for branch merging this patch makes branch merging abort when merged changesets have same file in different case on case insensitive filesystem. this patch does not prevent linear update which merges between target and working contexts, because 'branchmerge' is False in such case.

i18n: use encoding.lower/upper for encoding aware case folding this patch uses encoding.lower/upper for case folding, because ones of str can not fold case of non ascii characters correctly. to avoid cyclic dependency and to encapsulate logic of normcase in each platforms, this patch introduces encodinglower/encodingupper in both posix/windows specific files. this patch does not change implementation of normcase() in posix.py, because we do not know the encoding of filenames on POSIX. some "normcase()" are excluded from function wrap list in hgext/win32mbcs.py, because they become encoding aware by this patch.

windows: use upper() instead of lower() or os.path.normcase() this patch uses upper() instead of lower() or os.path.normcase() for case folding on Windows(NTFS), because lower-ing causes problems for some languages on it. see below for detail about problem of lower-ing: https://blogs.msdn.com/b/michkap/archive/2005/01/16/353873.aspx

icasefs: avoid normcase()-ing in util.fspath() for efficiency 'dirstate._normalize()', the only caller of 'util.fspath()', has already normcase()-ed path before invocation of it. normcase()-ed root can be cached on dirstate side, too. so, this patch changes 'util.fspath()' API specification to avoid normcase()-ing in it.

icasefs: use util.normcase() instead of lower() or os.path.normcase in fspath this also avoids lower()-ing on each path components by reuse the path normcase()-ed at beginning of function.