all: link to https for golang subdomains too

The previous commit (git 2ae77376) just did golang.org.  This one
includes golang.org subdomains like blog, play, and build.

Change-Id: I4469f7b307ae2a12ea89323422044e604c5133ae
Reviewed-on: https://go-review.googlesource.com/12071Reviewed-by: Rob Pike <r@golang.org>

doc/go_faq.html

@@ -893,7 +893,7 @@ encourages you to be explicit.
 </p>
 
 <p>
-A blog post titled <a href="http://blog.golang.org/constants">Constants</a>
+A blog post titled <a href="https://blog.golang.org/constants">Constants</a>
 explores this topic in more detail.
 </p>
 

doc/gopher/README

 The Go gopher was designed by Renee French. (http://reneefrench.blogspot.com/)
 The design is licensed under the Creative Commons 3.0 Attributions license.
-Read this article for more details: http://blog.golang.org/gopher
+Read this article for more details: https://blog.golang.org/gopher

src/cmd/compile/internal/big/float.go

@@ -1406,7 +1406,7 @@ func (x *Float) ucmp(y *Float) int {
 // sum (or difference) shall be −0. However, x+x = x−(−x) retains the same
 // sign as x even when x is zero.
 //
-// See also: http://play.golang.org/p/RtH3UCt5IH
+// See also: https://play.golang.org/p/RtH3UCt5IH
 
 // Add sets z to the rounded sum x+y and returns z. If z's precision is 0,
 // it is changed to the larger of x's or y's precision before the operation.

src/cmd/pprof/doc.go

@@ -8,5 +8,5 @@
 //
 //	go tool pprof binary profile
 //
-// For more information, see http://blog.golang.org/profiling-go-programs.
+// For more information, see https://blog.golang.org/profiling-go-programs.
 package main

src/encoding/gob/doc.go

@@ -246,7 +246,7 @@ where * signifies zero or more repetitions and the type id of a value must
 be predefined or be defined before the value in the stream.
 
 See "Gobs of data" for a design discussion of the gob wire format:
-http://blog.golang.org/gobs-of-data
+https://blog.golang.org/gobs-of-data
 */
 package gob
 

src/encoding/json/fold.go

@@ -26,7 +26,7 @@ const (
 // The letters S and K are special because they map to 3 runes, not just 2:
 //  * S maps to s and to U+017F 'ſ' Latin small letter long s
 //  * k maps to K and to U+212A 'K' Kelvin sign
-// See http://play.golang.org/p/tTxjOc0OGo
+// See https://play.golang.org/p/tTxjOc0OGo
 //
 // The returned function is specialized for matching against s and
 // should only be given s. It's not curried for performance reasons.

src/go/types/builtins.go

@@ -502,7 +502,7 @@ func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ b
 		case *Func:
 			// TODO(gri) Using derefStructPtr may result in methods being found
 			// that don't actually exist. An error either way, but the error
-			// message is confusing. See: http://play.golang.org/p/al75v23kUy ,
+			// message is confusing. See: https://play.golang.org/p/al75v23kUy ,
 			// but go/types reports: "invalid argument: x.m is a method value".
 			check.invalidArg(arg0.Pos(), "%s is a method value", arg0)
 			return

src/go/types/decl.go

@@ -228,7 +228,7 @@ func (check *Checker) typeDecl(obj *TypeName, typ ast.Expr, def *Named, path []*
 	// TODO(gri) It's easy to create pathological cases where the
 	// current approach is incorrect: In general we need to know
 	// and add all methods _before_ type-checking the type.
-	// See http://play.golang.org/p/WMpE0q2wK8
+	// See https://play.golang.org/p/WMpE0q2wK8
 	check.addMethodDecls(obj)
 }
 

src/math/big/float.go

@@ -1406,7 +1406,7 @@ func (x *Float) ucmp(y *Float) int {
 // sum (or difference) shall be −0. However, x+x = x−(−x) retains the same
 // sign as x even when x is zero.
 //
-// See also: http://play.golang.org/p/RtH3UCt5IH
+// See also: https://play.golang.org/p/RtH3UCt5IH
 
 // Add sets z to the rounded sum x+y and returns z. If z's precision is 0,
 // it is changed to the larger of x's or y's precision before the operation.

src/net/http/pprof/pprof.go

@@ -43,7 +43,7 @@
 //
 // For a study of the facility in action, visit
 //
-//	http://blog.golang.org/2011/06/profiling-go-programs.html
+//	https://blog.golang.org/2011/06/profiling-go-programs.html
 //
 package pprof
 

src/strings/strings.go

@@ -4,7 +4,7 @@
 
 // Package strings implements simple functions to manipulate UTF-8 encoded strings.
 //
-// For information about UTF-8 strings in Go, see http://blog.golang.org/strings.
+// For information about UTF-8 strings in Go, see https://blog.golang.org/strings.
 package strings
 
 import (