Do not recognize \uFEFF as whitespace in the metagrammar since it does not work with Rhino.

lib/compiler.js

@@ -1310,7 +1310,8 @@ with (PEG.Grammar) {
           new Literal("\v"),
           new Literal("\f"),
           new Literal("\xA0"),
-          new Literal("\uFEFF"),
+          // Should be here, but causes infinite loop in Rhino:
+          // new Literal("\uFEFF"),
           new Literal("\u1680"),
           new Literal("\u180E"),
           new Literal("\u2000"),

test/compiler-test.js

@@ -910,7 +910,6 @@ with (PEG.Grammar) {
     grammarParserParses('start:\f"abcd"',     simpleGrammar);
     grammarParserParses('start: "abcd"',      simpleGrammar);
     grammarParserParses('start:\xA0"abcd"',   simpleGrammar);
-    grammarParserParses('start:\uFEFF"abcd"', simpleGrammar);
     grammarParserParses('start:\u1680"abcd"', simpleGrammar);
     grammarParserParses('start:\u180E"abcd"', simpleGrammar);
     grammarParserParses('start:\u2000"abcd"', simpleGrammar);