Log Message:
Update cpuflags to 0.92
	optimize_gcc.mk needs to know the name of the package that is
	currently being built. Unfortunately with pkgsrc there is no way
	to do this, and its previous attempts to derive PKGNAME (if not
	set) from DISTNAME broke the php usage ext.mk file. Use a temp
	variable to do the same thing without breaking other pkgsrc
	assumptions