Log message:
kill all references to gcc.buildlink2.mk and compiler.mk, and define
USE_GCC2 or USE_GCC3 where appropriate.

the functionality of the old gcc.buildlink2.mk has been rolled into
compiler.mk now, which is automatically used.

more changes to come later...

Log message:
Update for the fact that 'arm' ports have been called NetBSD-*-arm for a while
now and not NetBSD-*-arm32. Changes include one or more of:
    - Change MACHINE_ARCH == arm32 to also match arm
    - Where ONLY_FOR_PLATFORM includes NetBSD-*-arm32, add NetBSD-*-arm
    - Where BROKEN or worked around for arm gcc bugs, set USE_GCC3
The last may shake out a few more broken packages the next bulk build.

Log message:
Use mk/gcc.buildlink2.mk rather than gcc/buildlink2.mk so lang/gcc3
is accepted. Suggested by Grant.

Log message:
Drop trailing whitespace.  Ok'ed by wiz.

Log message:
make usage of pax more consistent, use -O to bomb on broken archives
(suggested by lukem), group z, r and f flags.

some whitespace cleanup.

Log message:
Place WRKSRC where it belongs, to make pkglint happy; ok'ed by wiz.

Log message:
Use -O to tell pax(1) that there is only 1 volume in the angband spoilers
file. This is a workaround for what seems like a tar archive produced by
GNU tar not being able to be read by our pax(1).

Log message:
buildlink1 -> buildlink2

Log message:
Complete standardization of messages according to latest pkglint.

Log message:
Backout previous and do somewhat more elegantly...