KT-2303 Support loading private class members from bytecode

 #KT-2303 obsolete
Added test for KT-2381 Can't resolve references to fields inherited from Java class when used Kotlin class is loaded from bytecode

 #KT-2381 obsolete
KT-5087 Private members of Java classes should be marked as invisible, not unresolved

 #KT-5087 fixed
KT-5244 Crash from Kotlin JPS plugin when creating module script

 #KT-5244 fixed
Refactor TestlibTest

Make it search for tests in stdlib not by generated classes, but by analyzed
PSI
(TODO?) Refactor TestlibTest