2933 compiler warning gags need better granularity
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>

6692913 MBLKL generates E_PTRDIFF_OVERFLOW lint warnings
6717598 MBLKSIZE() causes lint pointer-difference warnings

6470037 remove global disable of some potentially useful lint warnings from the kernel lint build

PSARC 2005/348 Realtek Gigabit Ethernet driver
6247110 Solaris should support the Realtek 8169S chipset