Support sanitizer variants inside make builds

Create both sanitized and unsanitized variants inside make builds with
sanitizers enabled.  Only export the sanitized version to make, and
always install the sanitized version in /data to match the make build.

Change-Id: I5a17bcbddc7a9d871c929c84d3c116228ef3258f

cc/androidmk.go

@@ -24,6 +24,11 @@ import (
 )
 
 func (c *Module) AndroidMk() (ret android.AndroidMkData, err error) {
+	if c.Properties.HideFromMake {
+		ret.Disabled = true
+		return ret, nil
+	}
+
 	ret.OutputFile = c.outputFile
 	ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) (err error) {
 		fmt.Fprintln(w, "LOCAL_SANITIZE := never")