win32mbcs: allow win32mbcs extension to be enabled on cygwin platform this patch allows win32mbcs extension to be enabled on cygwin platform for problematic character encodings. on recent cygwin platform, even though "os.path.supports_unicode_filenames" is False, "os.listdir()" and other path manipulation functions can return the result correctly decoded in unicode for invocations with unicode arguments, if locale is configured properly. existing code to check "os.path.supports_unicode_filenames" is kept to prevent win32mbcs from being enabled on unexpected platform.

windows: use normalized path as path to subrepo path to subrepo is used to identify or check location of subrepo. it should be normalized (in "/" delimiter form), because it is also used with narrowmatcher which uses only normalized path even on Windows environment. this patch applies "util.pconvert()" on path to subrepo (called "subpath") to normalize it. for this patch, referers of below were checked. - subrepo.state() - subrepo.itersubrepos() - subrepo.subrepo() - context.sub() - context.substate() typical usecase is: for subpath in ctx.substate: sub = ctx.sub(subpath) ... ctx.substate[subpath] .... in this case, normalization has no side effect, because keys given from substate are used as key itself. other cases shown below also seem to require subpath to be normalized. - path components are joined by "/", in "commands.forget()": for subpath in ctx.substate: subforget[subpath + '/' + fsub] = (fsub, sub) - normalized "file" is used to check below condition, in "commands.revert()", "localrepository.commit()", and "localrepository._checknested()" file in ctx.substate - substate.keys() is passed to dirstate.walk()/status() which use only normalized pathes