Log version in JPS plugin

CompilerVersion.java is moved to cli-common (shared between compiler and JPS plugin) and renamed to KotlinVersion

This is needed because on TeamCity a JPS plugin is configured separately from the compiler, so it may happen that
JPS plugin version X tries to run compiler version X+100, and causes trouble.

compiler/cli/cli-common/src/org/jetbrains/jet/cli/common/KotlinVersion.java

@@ -16,7 +16,7 @@
 
 package org.jetbrains.jet.cli.common;
 
-public class CompilerVersion {
+public class KotlinVersion {
     // The value of this constant is generated by the build script
     // DON'T MODIFY IT
     public static final String VERSION = "@snapshot@";

compiler/cli/src/org/jetbrains/jet/cli/common/CLICompiler.java

@@ -157,7 +157,7 @@ public abstract class CLICompiler<A extends CompilerArguments> {
             @NotNull MessageRenderer messageRenderer) {
         if (arguments.isVersion()) {
             String versionMessage = messageRenderer.render(CompilerMessageSeverity.INFO,
-                                                           "Kotlin Compiler version " + CompilerVersion.VERSION,
+                                                           "Kotlin Compiler version " + KotlinVersion.VERSION,
                                                            CompilerMessageLocation.NO_LOCATION);
             errStream.println(versionMessage);
         }