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/language/table-pattern-index.zeek

@@ -0,0 +1,43 @@
+# @TEST-EXEC: zeek -b %INPUT >out
+# @TEST-EXEC: btest-diff out
+
+local p1: pattern = /one|foo|bar/;
+local p2: pattern = /two|oob/;
+local p3: pattern = /three|oob/;
+local p4 = /four/;
+
+local p: set[pattern] = {p1, p2, p3, p4};
+
+local t: table[pattern] of count = {
+	[p1] = 0,
+	[p2] = 1,
+	[p3] = 2,
+	[p4] = 3
+};
+
+local t2: table[pattern, count] of count = {
+	[p1,2] = 0,
+	[p2,3] = 2,
+	[p3,4] = 4,
+	[p4,5] = 6
+};
+
+print p1;
+print p2;
+print p3;
+print p4;
+
+print "-----------------";
+
+for ( key in p )
+	print key;
+
+print "-----------------";
+
+for ( key, value in t )
+	print key, value;
+
+print "-----------------";
+
+for ( [c1, c2], value in t2)
+	print c1, c2, value;