libndr: Use GUID_compare in GUID_equal

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Use GUID_equal in a few places

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
libcli: Add a NULL check in dom_sid_string

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jun 10 21:46:15 CEST 2014 on sn-devel-104
regedit: add white on blue color scheme
regedit: add padding for key labels when there's not a prefix.
regedit: add borders around key and value lists, and change headings
regedit: free value list subwindow
regedit: sort keys
regedit: add a color scheme for path and context help sections
regedit: add search feature.

Open up a search input with '/'. 'x' key gets the next
result.

This patch also ensures that keys are always sorted, so
that the search order matches the order the keys appear
on screen.

TODO:
	+ flesh out search interface
	+ find previous
	+ search values
regedit: add multicolumn list widget

Widget works for lists with one or more column(s).
Column headers are optional.

As a test, the patch also modifies regedit to use the
new widget for viewing registry keys. Valuelist still
needs to be upgraded to use this.
regedit: make value list display data in multiple columns