hgweb: move the diffs() generator into webutil

hgweb: use patch.diff() to make sensible diffs (issue1223, issue1258) This gets us git diffs when enabled and doesn't pick erratic file parents.

patch: turn patch.diff() into a generator This should even be a little faster than passing in an fp argument.

help: commands supporting --git point to the gitdiffs topic (issue1352)

mq: reflow qnew help, add help for options

hgweb: descend empty directories in web view When a manifest has a series of directories with nothing in them but a single directory, displaying the entire chain of empty directories allows for navigation down to the first non-empty directory with a single click. Because Java links package hierarchy to directory hierarchy, and because Java conventions include at least three empty directories at the top of this hierarchy, descending down empty directories is very common in Java web tools.

inotify: fix bug in formatting

Corrected some command synopsises

inotify: server raising an error when removing a file (issue1371) When a file is deleted via hg rm <file> the dirstate marks the file with a status of 'r'. The physical file has been deleted, but the inotify server tries to do a stat on the file after it's been removed. Patch catches the exception and correctly call updatestatus()

Fix util._statfiles_clustered() failing at root of a windows drive Report and initial fix by Andrei Vermel <avermel@mail.ru>.

hgweb: conditionally show file logs for deleted files

coal/paper: show a search tip when hovering over search box This doesn't work in IE, because IE only supports :hover on <a> elements.

kill some trailing spaces

mq: use cmdutil.matchfiles instead of match for qnew -f. Closes issue1368.

mq: put qnew tests into own file, fold in qnew-twice

zeroconf: Don't break serve if no internet connection is present.

hgweb: pass more information about parent/child csets to templates

help: add a topic on git diffs (issue1352)

hgweb coal/paper: Restore IE compatibility hack

Backed out changeset a1f8ad3c1821

add test-fncache

merge with mpm

Allow per-file shadowing of static directory in templatepath

hgweb: handle subdirectories within static directory

coal: remove dead CSS code

url: detect scheme with a regexp instead of urlsplit() The latter says 'c' is a scheme in 'c:\foo\bar'

url: fix file:// URL handling

bookmarks: fix strip handling

fix zeroconf handling for hgwebdir (error found by pychecker)

fix missing import, spotted by pychecker

remove unused variables

Fix https availability checking thanks to Augie Fackler for noticing it.