re: pcc and build system

[matthew green <mrg%eterna.com.au@localhost>]

most of the list below can probably go away entirely.  certainly
all the ones checking for GCC3.

   ./bin/csh/Makefile:.if ${HAVE_GCC} == 4 && ${MACHINE_ARCH} == "vax"
   ./bin/ed/Makefile:.if ${HAVE_GCC} == 4
   ./distrib/sets/Makefile:     @echo ${HAVE_GCC}
   ./distrib/utils/x_dhclient/Makefile:.if ${HAVE_GCC} == 4
   ./etc/Makefile:              DESTDIR EXTERNAL_TOOLCHAIN HAVE_GCC HAVE_GDB \
   ./games/bcd/Makefile:.if ${HAVE_GCC} == 4
   ./games/pom/Makefile:.if ${HAVE_GCC} == 4
   ./lib/i18n_module/UTF7/Makefile:.if ${MACHINE_ARCH} == "vax" && $ 
   {HAVE_GCC} > 3
   ./lib/libbz2/Makefile:    ${HAVE_GCC} == 4
   ./lib/libcrypt/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libdns/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libgssapi/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libhdb/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libheimntlm/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libhx509/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libkadm5clnt/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libkadm5srv/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libm/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libpcap/Makefile:.elif defined(HAVE_GCC)
   ./lib/libssh/Makefile:.if ${HAVE_GCC} == 4
   ./lib/libtelnet/Makefile:.if ${HAVE_GCC} == 4
   ./libexec/ipropd-master/Makefile:.if ${HAVE_GCC} == 4
   ./libexec/ipropd-slave/Makefile:.if ${HAVE_GCC} == 4
   ./libexec/kadmind/Makefile:.if ${HAVE_GCC} == 4
   ./libexec/kpasswdd/Makefile:.if ${HAVE_GCC} == 4
   ./Makefile:.if ${HAVE_GCC} == "3"
   ./Makefile:.if (${HAVE_GCC} == "3" || ${HAVE_GCC} == "4")
   ./regress/sys/kern/ras/ras1/Makefile:.if ${HAVE_GCC} == 4
   ./regress/sys/kern/ras/ras2/Makefile:.if ${HAVE_GCC} == 4
   ./regress/sys/kern/ras/ras3/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/atactl/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/cgdconfig/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/clri/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/dkctl/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/dump/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/fsck_ext2fs/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/fsck_ffs/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/fsdb/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/mount_smbfs/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/newfs/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/newfs_sysvbfs/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/restore/Makefile:.if ${HAVE_GCC} == 4
   ./sbin/veriexecctl/Makefile:.if ${HAVE_GCC} == 4
   ./sys/arch/hp700/stand/xxboot/Makefile:.if ${HAVE_GCC} != 4
   ./sys/lib/libsa/Makefile:.if ${HAVE_GCC} == 4
   ./tools/gcc/Makefile:.if ${HAVE_GCC} == 4
   ./tools/Makefile:.if ${HAVE_GCC} == "4"
   ./usr.bin/awk/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/crontab/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/ctags/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/gzip/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/nvi/build/Makefile:#.if ${HAVE_GCC} == 4
   ./usr.bin/ssh/sftp/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/ssh/ssh/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/telnet/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/tn3270/tn3270/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/tr/Makefile:.if ${HAVE_GCC} == 4
   ./usr.bin/vi/build/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/amd/amd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/amd/amq/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/amd/libamu/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/amd/pawd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/bind/named/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/bootp/bootptest/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/chrtbl/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/cron/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/dumplfs/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/hprop/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/installboot/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/iprop-log/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/isdn/isdnd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/isdn/isdnmonitor/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/isdn/isdntel/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/isdn/isdntrace/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/makefs/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/mopd/common/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/mopd/mopd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/mopd/mopprobe/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/mscdlabel/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/pppd/pppd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/rarpd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/rbootd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/rpc.pcnfsd/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/rtadvd/Makefile:.if (${HAVE_GCC} == 4)
   ./usr.sbin/tcpdump/Makefile:.if ${HAVE_GCC} == 4
   ./usr.sbin/wiconfig/Makefile:.if ${HAVE_GCC} == 4