migrate more stuff to wala.util

git-svn-id: https://wala.svn.sourceforge.net/svnroot/wala/trunk@4040 f5eafffb-2e1d-0410-98e4-8ec43c5233c4

com.ibm.wala.core/META-INF/MANIFEST.MF

@@ -53,9 +53,7 @@ Export-Package: .,
  com.ibm.wala.util,
  com.ibm.wala.util.bytecode,
  com.ibm.wala.util.config,
- com.ibm.wala.util.heapTrace,
  com.ibm.wala.util.io,
- com.ibm.wala.util.perf,
  com.ibm.wala.util.ref,
  com.ibm.wala.util.scope,
  com.ibm.wala.util.shrike,

com.ibm.wala.util/META-INF/MANIFEST.MF

@@ -15,7 +15,10 @@ Export-Package: com.ibm.wala.dataflow.graph,
  com.ibm.wala.util.graph.impl,
  com.ibm.wala.util.graph.labeled,
  com.ibm.wala.util.graph.traverse,
+ com.ibm.wala.util.heapTrace,
  com.ibm.wala.util.intset,
+ com.ibm.wala.util.io,
  com.ibm.wala.util.math,
+ com.ibm.wala.util.perf,
  com.ibm.wala.util.processes,
  com.ibm.wala.util.tables

com.ibm.wala.util/src/com/ibm/wala/util/io/FileUtil.java

@@ -25,7 +25,6 @@ import java.util.Iterator;
 import java.util.regex.Pattern;
 
 import com.ibm.wala.util.collections.HashSetFactory;
-import com.ibm.wala.util.warnings.WalaException;
 
 /**
  * Simple utilities for accessing files.
@@ -67,7 +66,7 @@ public class FileUtil {
     return result;
   }
 
-  public static void copy(String srcFileName, String destFileName) throws WalaException {
+  public static void copy(String srcFileName, String destFileName)  throws IOException {
     if (srcFileName == null) {
       throw new IllegalArgumentException("srcFileName is null");
     }
@@ -82,12 +81,6 @@ public class FileUtil {
       long n = src.size();
       MappedByteBuffer buf = src.map(FileChannel.MapMode.READ_ONLY, 0, n);
       dest.write(buf);
-    } catch (FileNotFoundException e) {
-      e.printStackTrace();
-      throw new WalaException("Failed to copy " + srcFileName + " to " + destFileName);
-    } catch (IOException e) {
-      e.printStackTrace();
-      throw new WalaException("Failed to copy " + srcFileName + " to " + destFileName);
     } finally {
       if (dest != null) {
         try {