Fix bug 114915 -- app not starting up in Mac opt builds. Work around a CodeWarrior optimizer bug by bumping down the optimization level for the optimized target. r=brendan, sr=shaver, a=Roto-rooter

js/macbuild/JavaScript.Prefix

@@ -29,3 +29,8 @@
 
 #include "MacPrefix.h"
 #include "JavaScriptConfig.h"
+
+// Bump down the optimization level to avoid a bug in the Pro 7 optimizer
+// with JS_ISIDENT() called with -1 (see bug 114915).
+
+#pragma optimization_level     2