MXS-2732 Rename sqlite-src-3110100 to sqlite-src-3110100.old

Originally, the sqlite installation was imported into the MaxScale
repository in the one gigantic MaxScale 1.4 -> 2.0 commit.

Consequently, there is no import commit to compare to if you want
to extract all MaxScale specific changes. To make it simpler in the
future, sqlite will now be imported in a commit of its own.

query_classifier/qc_sqlite/sqlite-src-3110100/ext/rbu/rbu_common.tcl

@@ -1,38 +0,0 @@
-# 2015 Aug 8
-#
-# The author disclaims copyright to this source code.  In place of
-# a legal notice, here is a blessing:
-#
-#    May you do good and not evil.
-#    May you find forgiveness for yourself and forgive others.
-#    May you share freely, never taking more than you give.
-#
-#***********************************************************************
-#
-
-if {![info exists testdir]} {
-  set testdir [file join [file dirname [info script]] .. .. test]
-}
-source $testdir/tester.tcl
-
-# Run the RBU in file $rbu on target database $target until completion.
-#
-proc run_rbu {target rbu} {
-  sqlite3rbu rbu $target $rbu
-  while 1 {
-    set rc [rbu step]
-    if {$rc!="SQLITE_OK"} break
-  }
-  rbu close
-}
-
-proc step_rbu {target rbu} {
-  while 1 {
-    sqlite3rbu rbu $target $rbu
-    set rc [rbu step]
-    rbu close
-    if {$rc != "SQLITE_OK"} break
-  }
-  set rc
-}
-