Remove Kernel.gsub_bang as that was removed in 1.9
Remove 1.8 compatiblity methods from Kernel
Remove 1.9 compatibility flags from Kernel
Remove unused 2.0 compatibility flag from Kernel
Fixes #1167. "print" called with no arguments prints "nil"
Fixes #1167. print called with no arguments prints nil
Merge with 1.7
Merge remote-tracking branch 'github/master'