38586: Metafication problem with $functions

If treated as a complete associative array or scanned (retrieving
individual values was not affected), it incorrectly unmetafied
the value so multibyte characters got confused.

Add test.

ChangeLog

@@ -1,3 +1,9 @@
+2016-06-03  Peter Stephenson  <p.stephenson@samsung.com>
+
+	* 38586: Src/Modules/parameter.c, Test/D07multibyte.ztst:
+	Don't unmetafy values for $functions when passing back
+	within parameter framework.
+
 2016-06-03  Daniel Shahaf  <d.s@daniel.shahaf.name>
 
 	* 38577: Completion/Unix/Type/_signals: Don't complete SIGEXIT

Src/Modules/parameter.c

@@ -487,11 +487,6 @@ scanfunctions(UNUSED(HashTable ht), ScanFunc func, int flags, int dis)
 			    strcat(pm.u.str, " \"$@\"");
 			} else
 			    pm.u.str = dyncat(start, t);
-			/*
-			 * TBD: Is this unmetafy correct?  Surely as this
-			 * is a parameter value it stays metafied?
-			 */
-			unmetafy(pm.u.str, NULL);
 			zsfree(t);
 
 			if (shf->redir) {

Test/D07multibyte.ztst

@@ -553,3 +553,12 @@
 0:${(q+)...} with printable multibyte characters
 >ホ
 >'She said "ホ".  I said "You can'\''t '\''ホ'\'' me!'
+
+#  This will silently succeed if zsh/parameter isn't available
+  (zmodload zsh/parameter >/dev/null 2>&1
+  f() {
+    : $(:)
+    "↓"
+  }
+  : $functions)
+0:Multibtye handled of functions parameter