These were the only 2 pre-singletons in soong. sdkPreSingleton is
totally unused. overlaySingleton can be done during
GenerateAndroidBuildActions instead.
Test: m nothing --no-skip-soong-tests
Change-Id: Ieb5ab92f18cb56be4049c0842f61df8aa02dc52c
Bug:278905106
Test: go test ./java --run TestManifestValuesApplicationIdSetsPackageName
and locally built a module and checked manifest pacakge_name
Change-Id: I5c8fd27c177b9e255dce197706f62580894008cb
Add a test for the manifest merger command line that would have prevented
b/291252863.
Bug: 291252863
Test: TestManifestMerger
Change-Id: I8c025efe7ccb06ad97b405e2927a4df07f9d3f27
