Optimizing: Improve generated code for HLoadClass...

... for resolved package-private class accessed from
unresolved compiling class in the same package.

Test: Additional tests in 727-checker-unresolved-class.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 161898207
Change-Id: I215dcd9db2297f5c8d9547635d80975d88534579
4 files changed