Added new rule thx to William McArthur

git-svn-id: https://pmd.svn.sourceforge.net/svnroot/pmd/trunk@1321 51baf565-9d33-0410-a72c-fc3788e3496d

pmd/test-data/ForLoopShouldBeWhileLoop1.java

@@ -0,0 +1,8 @@
+public class ForLoopShouldBeWhileLoop1 {
+ public void foo() {
+  int x = 2;
+  for (;x<5;) { 
+   x++;
+  }
+ }
+}

pmd/test-data/ForLoopShouldBeWhileLoop2.java

@@ -0,0 +1,7 @@
+public class ForLoopShouldBeWhileLoop2 {
+ public void foo() {
+  for (int x=2;x<5;) { 
+   x++;
+  }
+ }
+}

pmd/test-data/ForLoopShouldBeWhileLoop3.java

@@ -0,0 +1,5 @@
+public class ForLoopShouldBeWhileLoop3 {
+ public void foo() {
+  for (;;) {}
+ }
+}