Updated mediawiki/extensions
Project: mediawiki/extensions/MathSearch  5d83e6a94b55da34c8f01c20a9999bc3602357c4

Add setup for IBM DB2 driver

* simple script that sets up IBM DB2 driver (for testing)
* rename $wgMWSUrl ->  $wgMathSearchMWSUrl

Change-Id: I546a4e95c777b4e96c0de69448c21561f7e12ffd