[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/link.go

@@ -41,7 +41,7 @@ type Addr struct {
 	}
 	Sym     *LSym
 	Gotype  *LSym
-	Type_   int16
+	Type    int16
 	Index   uint8
 	Scale   int8
 	Reg     int8
@@ -85,7 +85,7 @@ type Prog struct {
 type LSym struct {
 	Name        string
 	Extname     string
-	Type_       int16
+	Type        int16
 	Version     int16
 	Dupok       uint8
 	Cfunc       uint8
@@ -137,7 +137,7 @@ type Reloc struct {
 	Off     int32
 	Siz     uint8
 	Done    uint8
-	Type_   int32
+	Type    int32
 	Variant int32
 	Add     int64
 	Xadd    int64
@@ -149,7 +149,7 @@ type Auto struct {
 	Asym    *LSym
 	Link    *Auto
 	Aoffset int32
-	Type_   int16
+	Type    int16
 	Gotype  *LSym
 }