MDL-38161 Upgrade xhprof to 02-2013 commits

Note this continues being version 0.9.2 and
only a few changes have landed since 3y ago.
(the important stuff is in the xhprof extension,
not in this UI package using it)
MDL-38144 categories are created in reverse sort order in externallib
MDL-38154 improve dir delete performance
MDL-38154 do not hardcode sha1 hash of empty string
MDL-37792 Conditions: Interests condition offered but not implemented
MDL-37455 - redirect for mod_folder course breaking changes
Merge branch 'MDL-38161' of git://github.com/stronk7/moodle
Merge branch 'wip-MDL-38144-master' of git://github.com/marinaglancy/moodle
Merge branch 'MDL-37792-master' of git://github.com/sammarshallou/moodle
MDL-37792 Course - Fix upgrade step and set version number for completion field fix.
Merge branch 'w08_MDL-38154_m25_delperf' of git://github.com/skodak/moodle
JS next
More work - silly popup wont hide on pageload.