When an app specifies (or imports) resources with various
configurations for different SDK versions, specifying
a minSdk will make many of those resources unreachable.
Version collapsing will prune out the resources specified
for SDK versions less than the minSdk.
If, however, there is no exact matching resource for the
minSdk version, the next smallest SDK version is kept.
Change-Id: Ic7bcab6c59d65c97c67c8767358abb57cdec60a4
When a preferred density is supplied, the closest matching densities
will be selected, the rest stripped from the APK.
Split support will be enabled in a later CL. Command line support is still
needed, but the foundation is ready.
Bug:25958912
Change-Id: I56d599806b4ec4ffa24e17aad48d47130ca05c08
