Updated mediawiki/extensions
Project: mediawiki/extensions/MathSearch  c165c23d8f4629868fca15ecb38301fbeb747d9d

Stable IDs for NTCIR wmc1.02

Use stable IDs for the second round of NTCIR-11
Math 2 Wikipedia Subtask round 2.

Change-Id: Ic1cfa6c35515f7acfc4c03c88710e531de77cd7f