revert the removal of some needed imports.

Author: peter-lawrey

compiler/src/main/java/net/openhft/compiler/CachedCompiler.java

@@ -31,6 +31,7 @@
 import java.io.File;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.util.*;
 
 import static net.openhft.compiler.CompilerUtils.*;
 

compiler/src/main/java/net/openhft/compiler/CompilerUtils.java

@@ -26,6 +26,7 @@
 import javax.tools.JavaCompiler;
 import javax.tools.StandardJavaFileManager;
 import javax.tools.ToolProvider;
+import java.io.*;
 import java.lang.management.ManagementFactory;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;

compiler/src/test/java/net/openhft/compiler/CompilerTest.java

@@ -23,6 +23,7 @@
 import junit.framework.TestCase;
 import org.junit.Test;
 
+import java.io.*;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.Arrays;
@@ -197,7 +198,7 @@ public void test_settingPrintStreamWithNoErrors() throws Exception {
         try {
             System.setOut(new PrintStream(new OutputStream() {
                 @Override
-                public void write(int b) throws IOException {
+                public void write(int b) {
                     usedSysOut.set(true);
                 }
             }));