Introduced utility method.
Extracted PackagePartClassUtils.
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
Fix range inclusivity in String.indices
Delete outdated directory creation in build.xml
Add *Range.isEmpty(), *Progression.isEmpty()
Fix equals and hashCode for empty ranges and progressions

Empty range is equal to any other empty range
Use f/L literal suffixes instead of toFloat()/toLong()
JS backend: fix translation `when` statement -- now WhenTranslator returns JsBlock instead of hackish adding statements to context block.

It fixed the compiler crashing when translating `for`/`when`/`if` with `when` statement(KT-5234) and KT-5058.

 #KT-5234 fixed
 #EA-57346 fixed
 #KT-5058 fixed
Loading descriptors from incremental cache instead of package classes.
Removed member filter from injectors.
Got rid of redundant constructor.
Rebuild only if proto changed.
Fixed computing source file for package facade.

There had been a bug in case when compiling package with some class-only files, but exactly one file with callables.
Checking for changes in class proto.
Minor. Typo.
Checking for constants values in incremental compiler.