SERVER-14831 Add textIndexVersion:1 support to FTSQuery

(cherry picked from commit caa6c9411ba9e3b2b0e9056a0e194009298e4ed8)
SERVER-14831 Fix signed/unsigned comparison in fts_query_test.cpp

(cherry picked from commit b3b6a1a9da2417ce61b2654f9ac5cc2685bc87ad)
SERVER-14892 Fix memory leak in MatchExpressionParser::_parseElemMatch

(cherry picked from commit cc80c4d9a0556926a3f3fa9556c95ffd56aa4814)
SERVER-14984 Server aborts when running $centerSphere query with NaN radius

(cherry picked from commit 8dd902ab53e340aac9cf570f4b3c42f139694707)
SERVER-14961 IndexScan over empty range should return EOF immediately

(cherry picked from commit 2c510c5c06b4e557efb680d57694d24f1c028464)
SERVER-14969 CollectionCursorCache::invalidateAll() kill agg exec

(cherry picked from commit 71e2312d2ad6d418ea223d6e003a065122c926d8)