Refactor cli: all the jvm stuff goes under org.jetbrains.jet.cli.jvm, common stuff under org.jetbrains.jet.cli.common

Refactor cli: all the jvm stuff goes under org.jetbrains.jet.cli.jvm, common stuff under org.jetbrains.jet.cli.common

String methods

Add functions for File to read by lines and byte blocks

Array#lastIndex property has been added to stdlib

#KT-1804

* assert hides errors when code is executed without -ea
* it is easier to set up breakpoint

 #KT-1860 Fixed

This is required for error positioning

The previous version of the output processing algorithm was quadratic in the size of a message
 which manifested in the case of a long stack trace of an internal error. Now we use a SAX parser that
 processes its input in linear time and notifies the environment as it goes.

 Now, the compiler output in the "-tags" mode is enclosed into <MESSAGES>...</MESSAGES>

 #KT-1815 fixed