Cleanup in compiler modules

compiler/cli/cli-runner/src/org/jetbrains/kotlin/runner/Main.kt

@@ -41,7 +41,7 @@ public object Main {
         classpath.add(".")
 
         var i = 0
-        while (i < args.size()) {
+        while (i < args.size) {
             val arg = args[i]
             if (collectingArguments) {
                 arguments.add(arg)
@@ -50,7 +50,7 @@ public object Main {
             }
 
             fun next(): String {
-                if (++i == args.size()) {
+                if (++i == args.size) {
                     throw RunnerException("argument expected to $arg")
                 }
                 return args[i]
@@ -105,7 +105,7 @@ public object Main {
             run(args)
         }
         catch (e: RunnerException) {
-            System.err.println("error: " + e.getMessage())
+            System.err.println("error: " + e.message)
             System.exit(1)
         }
     }

compiler/cli/cli-runner/src/org/jetbrains/kotlin/runner/runners.kt

@@ -85,7 +85,7 @@ class JarRunner(private val path: String) : AbstractRunner() {
                 }
             }
             catch (e: IOException) {
-                throw RunnerException("could not read manifest from " + path + ": " + e.getMessage())
+                throw RunnerException("could not read manifest from " + path + ": " + e.message)
             }
             ?: throw RunnerException("no Main-Class entry found in manifest in $path")