Merge remote-tracking branch 'origin/topic/dev/patterns-in-sets'

Fixes in merge:
- Memory leak in HashKey ctor
- Minor whitespace/style changes

* origin/topic/dev/patterns-in-sets:
  Enable Patterns as Table index in non singleton cases
  Added support to create a Hashkey for PatternVals using their Pattern Texts

testing/btest/Baseline/language.table-pattern-index/out

@@ -0,0 +1,19 @@
+/^?(one|foo|bar)$?/
+/^?(two|oob)$?/
+/^?(three|oob)$?/
+/^?(four)$?/
+-----------------
+/^?(two|oob)$?/
+/^?(four)$?/
+/^?(one|foo|bar)$?/
+/^?(three|oob)$?/
+-----------------
+/^?(two|oob)$?/, 1
+/^?(four)$?/, 3
+/^?(one|foo|bar)$?/, 0
+/^?(three|oob)$?/, 2
+-----------------
+/^?(two|oob)$?/, 3, 2
+/^?(one|foo|bar)$?/, 2, 0
+/^?(four)$?/, 5, 6
+/^?(three|oob)$?/, 4, 4