SERVER-13328 enhance "updater not supported" error message
SERVER-13334 fix maxTimeMS shell helper with count
SERVER-13336 count should always yield

Revert "SERVER-12554 Lazily yield on count queries."

This reverts commit 2850cc7253344c639bc9a01bc6dff3ffd2cca422.
SERVER-13342 add a createCollection() to guard against timeouts in tags.js
remove jstest/multiClient because it has only one test in it which isn't run and wouldn't do anything anyway

jstest/libs/concurrent.js is also being removed because this was the only thing that used it
SERVER-13297: convert parallel suite to use jsCore tests
SERVER-13266 log messages with typos

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-13347 Clear execStats in OpDebug::reset()
SERVER-13332 fix scary messaging around unsharded cursors
SERVER-13287: delegate to shell when compressing tar archives

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-13297: remove dead jstests