- dropped regularExpression in favour of regExp

- moved findStrings from stringList to new stringListOps
  (helps reduce the influence on dependencies)
- findStrings can also do partial matches

applications/test/stringList/stringListTest.C

@@ -26,7 +26,7 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#include "stringList.H"
+#include "stringListOps.H"
 #include "IOstreams.H"
 
 using namespace Foam;