Merge pull request #10 from dk/master

Grammar, Automate Tests Part 3, Detect Parser Errors
Grammar Tests, Edit Dmitry Karasik's Code For RPerl Compliance
Grammar Tests, Rename rperl_parse_error() To rperl_grammar_error()
Grammar Tests, Disable Print & Return From t/20_grammar.t
Test Modes, Edit Dmitry Karasik's Code For RPerl Compliance, Part 5
Test Modes, Edit Dmitry Karasik's Code For RPerl Compliance, Part 6
Test Modes, Edit Dmitry Karasik's Code For RPerl Compliance, Part 7; Grammar, Add qw() Operator
Test Modes, Edit Dmitry Karasik's Code For RPerl Compliance, Part 8
use implicit test modes