Add ASN.1 parser.

R=rsc
APPROVED=rsc
DELTA=1459  (1459 added, 0 deleted, 0 changed)
OCL=35389
CL=35681

src/pkg/Make.deps

 archive/tar.install: bytes.install io.install os.install strconv.install strings.install
+asn1.install: fmt.install os.install reflect.install strconv.install strings.install time.install
 base64.install: bytes.install io.install os.install strconv.install
 big.install:
 bignum.install: fmt.install

src/pkg/Makefile

@@ -13,6 +13,7 @@ all: install
 
 DIRS=\
 	archive/tar\
+	asn1\
 	base64\
 	big\
 	bignum\

src/pkg/asn1/Makefile

+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include $(GOROOT)/src/Make.$(GOARCH)
+
+TARG=asn1
+GOFILES=\
+	asn1.go\
+
+include $(GOROOT)/src/Make.pkg