See sys.mk.REL=ALL.diff sys.mk.REL=ALL.diff.ignore for send-pr reason etc

-pipe uses too much memory on small machines.

This doesnt apply for 8.0-RELEASE, but as most of my machines with newer release have
lots of memory, I dont need this Yet ... unntil I upgrade libretto & scanjet.
So I have removed link:
	sys.mk.REL=8.0-RELEASE.diff@ -> sys.mk.REL=7.2-RELEASE.diff


*** 7.0-RELEASE/src/share/mk/sys.mk.orig	Tue Dec 18 15:11:26 2007
--- 7.0-RELEASE/src/share/mk/sys.mk	Tue Dec 18 15:12:23 2007
***************
*** 36,44 ****
  .else
  CC		?=	cc
  .if ${MACHINE_ARCH} == "arm"
! CFLAGS		?=	-O -fno-strict-aliasing -pipe
  .else
! CFLAGS		?=	-O2 -fno-strict-aliasing -pipe
  .endif
  .if defined(NO_STRICT_ALIASING)
  CFLAGS		+=	-fno-strict-aliasing
--- 36,44 ----
  .else
  CC		?=	cc
  .if ${MACHINE_ARCH} == "arm"
! CFLAGS		?=	-O -fno-strict-aliasing
  .else
! CFLAGS		?=	-O2 -fno-strict-aliasing
  .endif
  .if defined(NO_STRICT_ALIASING)
  CFLAGS		+=	-fno-strict-aliasing