added CFPContext to avoid recreating of CFPVisitor all the time;
used JetVisitorVoidWithParameter
fixed exponential building of cf graph
if there was en error in chained qualified expression
fixed bug in renderer for violated upper bound error
check incomplete equality
KT-4341 No resolved call for right-hand side of equals expression
 #KT-4341 Fixed
fixed 'getSciceContents'
do not throw an exception when some slices were overwritten
++fixed exponential building of cf graph if there was en error in chained qualified expression
changed default positioning strategy:
  added special handling for JetObjectLiteralExpression
added renderers for constraint system and type bounds

moved classes
asserts changed to LOG.error