util: take propertycache from context.py

ui: print_exc() -> traceback()

ui: traceback -> _traceback

ui: report_untrusted fixes - report_untrusted -> _reportuntrusted - only report config shadows if enabled - config shadows are debug messages

ui: privatize cdata vars

ui: buffers -> _buffers

ui: trusted_users -> _trustusers, trusted_groups -> _trustgroups

ui: assumetrusted -> trust

ui: _get_cdata -> _data

config: getsource -> source

ui: simplify fixconfig

ui: fix-up and warn about deprecated %%

bugzilla: fix section reading

templater: use new config parser This gives us the ability to use includes and continuations

config: add section filter to read move section filtering out of ui.readconfig kill section filtering in config.update

config: deal with spaces at end of line more carefully

hgweb: kill parentui references

ui: kill most users of parentui name and arg, replace with .copy()

ui: replace parentui mechanism with repo.baseui

add cmdutil.remoteui remoteui sorts out the issues of getting ssh config options from the local repo into the remote one while not copying other options like hooks.

ui: less links to parentui

config: add some helper methods

config: split source data out into separate map

config: add %unset name support

config: allow including other config files

showconfig: show source file and line with --debug

util: kill configparser wrapper

hgweb: use config.config

clone: config escaping no longer needed

Merge with stable