Bump number of allowed variables per scope to 65535, to address GWT.

test/mjsunit/limit-locals.js

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-// Test that there is a limit of 32767 locals.
+// Test that there is a limit of 65535 locals.
 
 function function_with_n_locals(n) {
   test_prefix = "prefix ";
   test_suffix = " suffix";
   var src = "test_prefix + (function () {"
   for (var i = 1; i <= n; i++) {
     src += "var x" + i + ";";
   }
   src += "return " + n + ";})() + test_suffix";
   return eval(src);
 }
 
 assertEquals("prefix 0 suffix", function_with_n_locals(0));
 assertEquals("prefix 16000 suffix", function_with_n_locals(16000));
 assertEquals("prefix 32767 suffix", function_with_n_locals(32767));
+assertEquals("prefix 65535 suffix", function_with_n_locals(65535));
 
-assertThrows("function_with_n_locals(32768)");
+assertThrows("function_with_n_locals(65536)");
 assertThrows("function_with_n_locals(100000)");