am d801ea90: am 2fb1789c: am 66a4ccc4: am df9a6dff: am 48ee66d2: am ece98e5f: Merge "Fix checkbuild targets, remove unittest_enum_mulitplejava_nano.proto."

* commit 'd801ea90d87ceb1aa4d2cf591885c3d2c885d1d8':