Not yet tagged as release, but updating ahead of that for the
performance improvement that landed with
https://github.com/santhoshtr/CLDRPluralRuleParser/commit/a7782ca.
This is particularly impactful on calls to mw.msg() during the
critical path, due to this library being called by jqueryMsg,
which is used by mw.Message#text, which mw.msg() calls by default.
Particularly seen in the startup code from ULS modules.
Bug: T127328
Change-Id: Ic865e7077d1053c65f7ae1633c60bf52104731b7
Follows-up 648667ac9f, which didn't move this module because
it had a local patch for exposing via module.exports and mw.lib
(instead of its default 'pluralRuleParser' global).
Restore the file back to a clean copy from upstream, and perform
the export via a separately concatenated file instead, using the
same pattern we already use for 'oojs' and 'moment'.
Change-Id: I27ee80dc34e0ad5206cf9c1ce68be3ec8811ecf8
