Updated mediawiki/extensions
Project: mediawiki/extensions/CirrusSearch  f38f19ace9bd1dd285b692e4e0a7543b68cdc907

Add error messages for pool queue full

These error messages tell the user that that are too many concurrent queries
or too many concurrent _regex_ queries so its more clear what is up.

Change-Id: I19270803badeb2bcfe46077f41dbcdbac42b389f