Java: Implemented MethodHandle part of inspection "MethodHandle/VarHandle invocation arguments mismatch" (IDEA-171813)

Terminal: don't initialize environment variables as it breaks IDEA-171957, unless it is needed for virtualenv activation as in PY-17816

IDEA-172417 Dataflow analysis: track that loop is visited if and only if array/collection is non-empty

jacoco: fail fast on don't skip all roots when duplicated classes are rejected by the engine (IDEA-169825)

Before that if several editions of the same product (e.g. IDEA Community and IDEA Ultimate) are built in the same script they will use the same file so only licenses from the last product will remain in it.

SimplifyStreamApiCallChainsInspection: Boolean.TRUE/FALSE::equals scenarios: check that lambda/method reference never return null

map(..).anyMatch(Boolean.TRUE::equals) -> anyMatch(..)
map(..).allMatch(Boolean.FALSE::equals) -> noneMatch(..)
map(..).noneMatch(Boolean.FALSE::equals) -> allMatch(..)

SimplifyStreamApiCallChainsInspection: suggest ot replace optional.stream().forEach() (Java 9) with optional.ifPresent()

Removed unnecessary space to make the name consistent with other usages.

- print line after command end instead of printing before each command
- print result only when it's present
- prepend all user input with '> '

Also add more debug logging for further investigation.

Trace virtual file properties in order to investigate the assertion failure
more closely.

we cannot get module from RC because it is not yet read

default separator changed to . because only CMakeWorkspace uses -. - "conflicts" with - dash in the project name, so, current implicit default is restored.