[dev.cc] cmd/internal/obj: export more symbols, rename Type_ to Type

For new assembler, reconvert using rsc.io/c2go rev f9db76e.
- Removes trailing _ from Go keywords that are exported.
- Export regstr as Register, anames[5689] as Anames.

Also update clients.

Change-Id: I41c8fd2d14490236f548b4aa0ed0b9bd7571d2d7
Reviewed-on: https://go-review.googlesource.com/3151
Reviewed-by: Rob Pike <r@golang.org>

src/cmd/internal/obj/pcln.go

@@ -293,7 +293,7 @@ func linkpcln(ctxt *Link, cursym *LSym) {
 			if int(p.As) == ctxt.Arch.AFUNCDATA {
 				i = int(p.From.Offset)
 				pcln.Funcdataoff[i] = p.To.Offset
-				if int(p.To.Type_) != ctxt.Arch.D_CONST {
+				if int(p.To.Type) != ctxt.Arch.D_CONST {
 					// TODO: Dedup.
 					//funcdata_bytes += p->to.sym->size;
 					pcln.Funcdata[i] = p.To.Sym