Updated ps-special-form-p to correctly identify a special form even if the symbol identifying the special form is in the wrong package.
Updated ps-special-form-p to correctly identify a special form even if the symbol identifying the special form is in the wrong package.

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