Disabling parallel builds without daemon again and undoing apprpriate fix to broken tests problem, since it effectively cancelled fix for parallel building itself and was causing exceptions on heavy builds

(cherry picked from commit 0610452)

Original commit: 4643d7fc4d

jps/jps-plugin/src/org/jetbrains/kotlin/compilerRunner/CompilerRunnerUtil.java

@@ -70,7 +70,7 @@ public class CompilerRunnerUtil {
     }
 
     @Nullable
-    public static Object invokeExecMethod(
+    public synchronized static Object invokeExecMethod(
             @NotNull String compilerClassName,
             @NotNull String[] arguments,
             @NotNull CompilerEnvironment environment,