binutils214 stage 2/4.

binutils214 stage 2/4.

 * Normalize binutils212 and binutils214.  Remove /usr/bin/gcc{2,3}/*
   and move those binaries to /usr/libexec/gcc{2,3}.  Adjust objformat
   to suit.

 * Hack up contrib/gcc3 to accomodoate library path requirements and fix
   STANDARD_BINDIR_PREFIX.  Add a missing trailing '/' in STANDARD_EXEC_PREFIX.

 * Adjust /usr/src/etc/Makefile (upgrade_etc) to remove old GCC and BINUTILS
   junk.

 * Cleanup etc/mtree/BSD.usr.dist

 * Only build gcc2 for non-cross-compiled i386 native builds.  Do not
   build libc_r for non-i386 architectures for now.  Allow on sysctl based
   setproctitle() updates for non-i386 architectures for now.

 * Move ldscripts from /usr/libdata/gcc{2,3}/ldscripts into
   /usr/libexec/binutilsXXX/ldscripts and remove /usr/libdata/gcc{2,3}.

 * GCC vendor obrien->dillon, change TARGET_OS in various places from
   freebsd -> dragonfly.

 * Consolidate config.h differences for cross builds in the Makefiles so
   we need only have one config.h for binutils214/as.

 * Cleanup and fix default target BFD for the assembler and linker when
   cross-building.

 * Build both the 32 and 64 bit support BFD's for binutils214 even if
   just doing a native build.

 * Remove a bunch of alpha junk (incomplete).

 * Note gnu/usr.bin/binutils214/libbfd/dfly_targmatch.h contains aliases
   to match dragonfly BFD targets.  Some are probably unnecessary but I
   had to move on.

 * Bring in a bunch of AMD64 related files (incomplete).

 * Update rpcgen to locate cpp with the current path instead of /usr/bin/cpp.
   Add rpcgen to the buildworld bootstrap tools.

Obtained-From: A good chunk of the amd64-specific files were adapted from
	FreeBSD-5 (authored by Peter Wemm and others).