PKG_DAT, Return dynamic information on the "Packages" package

rst $08, defw $060f


IN:	-
OUT:	Fc=0, success
	CDE=bytes in use
	B=OZ handles in use
	A=resources in use by applications

Registers changed after return:
  ......HL/IXIY same
  AFBCDE../.... different


Notes:
