Convert aapt to Soong

See build/soong/README.md for more information.

Test: cd frameworks/base/tools/aapt; mma
Test: aapt version
Change-Id: Ice97e9b32c53cfed30d68acd5717d8c66712df4c
diff --git a/tools/aapt/Main.cpp b/tools/aapt/Main.cpp
index d714687..2f2ef92 100644
--- a/tools/aapt/Main.cpp
+++ b/tools/aapt/Main.cpp
@@ -6,6 +6,7 @@
 #include "Main.h"
 #include "Bundle.h"
 
+#include <build/version.h>
 #include <utils/Compat.h>
 #include <utils/Log.h>
 #include <utils/threads.h>
@@ -20,10 +21,6 @@
 
 static const char* gProgName = "aapt";
 
-#ifndef AAPT_VERSION
-    #define AAPT_VERSION ""
-#endif
-
 /*
  * Show version info.  All the cool kids do it.
  */
@@ -32,7 +29,7 @@
     if (bundle->getFileSpecCount() != 0) {
         printf("(ignoring extra arguments)\n");
     }
-    printf("Android Asset Packaging Tool, v0.2-" AAPT_VERSION "\n");
+    printf("Android Asset Packaging Tool, v0.2-%s\n", android::build::GetBuildNumber().c_str());
 
     return 0;
 }