Convert development/tools to Android.bp

See build/soong/README.md for more information

Also moves rmtypedefs to use the guava prebuilt from
prebuilts/misc/common.

Test: m checkbuild
Change-Id: I9298967275ca40f8d50841b204cd40612a8a5f56
diff --git a/tools/Android.bp b/tools/Android.bp
new file mode 100644
index 0000000..b44c296
--- /dev/null
+++ b/tools/Android.bp
@@ -0,0 +1 @@
+subdirs = ["*"]