modify compiling function to use variable environment
modify compiling variable reference to use variable environment
modify compiling IF statement to use variable environment
modify compiling LET statement to use variable environment
modify compiling PROGN statement to use variable environment
modify compiling RETURN statement to use variable environment
modify compiling WITH-SHARED-MEMORY statement to use variable environment
modify compiling macro to use variable environment
modify compiling function to use variable environment
modify COMPILE-EXPRESSION to use variable environment
modify compiling INLINE-IF to use variable environment