base

Cache resource ID lookups in aapt

This speeds up certain workloads considerably, particularly
those involved in buildling apps via the SDK.  Windows-based
use should particularly benefit from the change.

(cherry picked from commit d8dde13a63565dcd72bcf03a5088407b737ba793)

Change-Id: I33835bc64ade77688d41e8bfcd371b0a5f59d8fd