hgignore: ignore more bytecode ignore optimized bytecode and jython bytecode

doc: Capitalize the "options" header of mercurial commands

doc: Add back quotes around filenames Filenames starting with a dot (.hg and .hgignore) confuse man when creating the ps documentation with "man -t hg >hg.ps" if they are not enclosed in back quotes.

merge with stable

opener: use posixfile to hold file open when calling nlinks() Mercurial's posixfile is less intrusive on Windows than Python's open

remove pointless os.path.join calls when opening files in .hg/cache Windows deals just fine with '/' in paths and Mercurial on Windows already does file accesses elsewhere with mixed \ and / in file paths anyway. This patch also makes the static-http repo case use proper URLs of the form http://example.com/repo/.hg/cache/branchheads http://example.com/repo/.hg/cache/tags instead of the entirely pointless http://example.com/repo/.hg/cache%5Cbranchheads http://example.com/repo/.hg/cache%5tags (as introduced by 5ccdca7df211)