and update related redirects for the entire /guide/developing/ path.
Change-Id: Ie23791e3765ff821d9abba220ebdde782d6439ed
to: /google/play/licensing/index.html
- from: /google/play/billing/billing_about.html
to: /google/play/billing/index.html
-- from: /guide/developing/tools/
+- from: /guide/developing/tools/proguard.html
+ to: /studio/build/shrink-code.html
+- from: /guide/developing/tools/...
to: /studio/command-line/
-- from: /guide/developing/
+- from: /guide/developing/...
to: /studio/
- from: /tools/aidl.html
to: /guide/components/aidl.html