Two small bug fixes:

	parsen: suppressed dead mode setting after return at end of variable handling.
	parseBool: set continue instruction after both cases for variable assignment and read.
	added continue instruction at the end of handling of global parameter case p_.
	
	parseBool : in case of post incr/decrementation of a variable suppress blancs.
	parsen & parseBool : in case akt = blanc at the end of main loop, suppress blancs after
	error message.

 This caused the parser to block after ++ or -- post operators as in:
	iif (index-- +1 >p_3)


	CalcMaxStack : corrected index handling in case of if structure without else branch.

Two not yet used routines are provided for future optimisation :
checkVariable
checkBoolVariable