Start using blueprint_go_binary

And install the tools into a more obvious location. soong_env is not
moved, since we need it to exist early, so that we can use it in
soong.bash in case there's a build failure.

Change-Id: I9bd1fa320d84d180b2cf3deb90782d380666f7a6
diff --git a/android/config.go b/android/config.go
index 8701960..ee95d2e 100644
--- a/android/config.go
+++ b/android/config.go
@@ -197,6 +197,10 @@
 	return false
 }
 
+func (c *config) BlueprintToolLocation() string {
+	return filepath.Join(c.buildDir, "host", c.PrebuiltOS(), "bin")
+}
+
 // PrebuiltOS returns the name of the host OS used in prebuilts directories
 func (c *config) PrebuiltOS() string {
 	switch runtime.GOOS {
diff --git a/android/glob.go b/android/glob.go
index aec5fa9..34b3de4 100644
--- a/android/glob.go
+++ b/android/glob.go
@@ -39,7 +39,7 @@
 // in a build failure with a "missing and no known rule to make it" error.
 
 var (
-	globCmd = filepath.Join("${bootstrap.BinDir}", "soong_glob")
+	globCmd = filepath.Join("${bootstrap.ToolDir}", "soong_glob")
 
 	// globRule rule traverses directories to produce a list of files that match $glob
 	// and writes it to $out if it has changed, and writes the directories to $out.d