libgo, compiler: Upgrade libgo to Go 1.4, except for runtime.

This upgrades all of libgo other than the runtime package to
the Go 1.4 release.  In Go 1.4 much of the runtime was
rewritten into Go.  Merging that code will take more time and
will not change the API, so I'm putting it off for now.

There are a few runtime changes anyhow, to accomodate other
packages that rely on minor modifications to the runtime
support.

The compiler changes slightly to add a one-bit flag to each
type descriptor kind that is stored directly in an interface,
which for gccgo is currently only pointer types.  Another
one-bit flag (gcprog) is reserved because it is used by the gc
compiler, but gccgo does not currently use it.

There is another error check in the compiler since I ran
across it during testing.

gotools/:
	* Makefile.am (go_cmd_go_files): Sort entries.  Add generate.go.
	* Makefile.in: Rebuild.

From-SVN: r219627

1 files changed, 27 insertions, 0 deletions

diff --git a/libgo/go/crypto/x509/root_unix.go b/libgo/go/crypto/x509/root_unix.go
index 11ad3c440d2..f77d6c0c57f 100644
--- a/libgo/go/crypto/x509/root_unix.go
+++ b/libgo/go/crypto/x509/root_unix.go
@@ -15,6 +15,15 @@ var certFiles = []string{
 	"/etc/ssl/ca-bundle.pem",                 // OpenSUSE
 	"/etc/ssl/cert.pem",                      // OpenBSD
 	"/usr/local/share/certs/ca-root-nss.crt", // FreeBSD/DragonFly
+	"/etc/pki/tls/cacert.pem",                // OpenELEC
+	"/etc/certs/ca-certificates.crt",         // Solaris 11.2+
+}
+
+// Possible directories with certificate files; stop after successfully
+// reading at least one file from a directory.
+var certDirectories = []string{
+	"/system/etc/security/cacerts", // Android
+
 }
 
 func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
@@ -32,6 +41,24 @@ func initSystemRoots() {
 		}
 	}
 
+	for _, directory := range certDirectories {
+		fis, err := ioutil.ReadDir(directory)
+		if err != nil {
+			continue
+		}
+		rootsAdded := false
+		for _, fi := range fis {
+			data, err := ioutil.ReadFile(directory + "/" + fi.Name())
+			if err == nil && roots.AppendCertsFromPEM(data) {
+				rootsAdded = true
+			}
+		}
+		if rootsAdded {
+			systemRoots = roots
+			return
+		}
+	}
+
 	// All of the files failed to load. systemRoots will be nil which will
 	// trigger a specific error at verification time.
 }