Few minor codegen fixes

 - (partially) fix annotations with array arg trigger stale false positive
 - support boxed primitives parcelling
 - support excluding generated code from Intellij auto-formatting

Fixes: 142086873, 142149372
Bug: 142132310
Test: . frameworks/base/tests/Codegen/runTest.sh
+ manually test auto-formatting
Change-Id: Ib6a44dee59f840cc11066aa9ff3517d957d1d010