Revert of Make Error.prototype.toString spec compliant; and fix various side-effect-free error printing metho…

test/webkit/toString-recursion-expected.txt

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 This test checks that toString() does not have a problem when an object has itself as a property.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
 PASS var array = []; array[0] = array; array + '' is ''
+PASS var error = new Error; error.name = error; error.message = error; error + '' is ''
 PASS var regexp = /a/; regexp.source = regexp; regexp + '' is '/a/'
 PASS successfullyParsed is true
 
 TEST COMPLETE