Added macro environment unit test that tests for bug "inconsistent expansion of local macro".
Added macro environment unit test that tests for bug "inconsistent expansion of local macro".

3b/parenscript,manuel/parenscript,JackDanger/parenscript,JackDanger/parenscript,VincentToups/parenscript,JackDanger/parenscript,fredericksilva/Parenscript,JDReutt/parenscript,vsedach/Parenscript