STYLE: favour include word.H instead of string.H

- in many places the string.H include is redundant anyhow.
  May wish to change to foamString.H (or equiv) in the future

applications/test/cplusplus1/Test-cpluplus1.C

@@ -28,7 +28,6 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#include "string.H"
 #include "macros.H"
 #include "IOstreams.H"
 #include "List.H"

applications/test/delete/Test-delete.C

@@ -29,7 +29,7 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#include "string.H"
+#include "word.H"
 #include "IOstreams.H"
 
 using namespace Foam;

applications/test/limits/Test-limits.C

@@ -32,8 +32,8 @@ Description
 #include <limits>
 #include "int.H"
 #include "uint.H"
-#include "string.H"
 #include "scalar.H"
+#include "word.H"
 #include "IOstreams.H"
 
 using namespace Foam;

applications/test/sizeof/Test-sizeof.C

@@ -31,7 +31,6 @@ Description
 
 #include "bool.H"
 #include "Switch.H"
-#include "string.H"
 #include "dictionary.H"
 #include "zero.H"
 #include "IOstreams.H"

applications/test/string/Test-string.C

@@ -29,12 +29,7 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#include "string.H"
-#include "stringOps.H"
-#include "dictionary.H"
-#include "IOstreams.H"
-#include "OSspecific.H"
-
+#include "fieldExprFwd.H"
 #include "int.H"
 #include "uint.H"
 #include "scalar.H"
@@ -42,6 +37,10 @@ Description
 #include "fileName.H"
 #include "stringList.H"
 #include "stringOps.H"
+#include "dictionary.H"
+#include "IOstreams.H"
+#include "OSspecific.H"
+
 
 using namespace Foam;
 

applications/test/string2/Test-string2.C

@@ -28,12 +28,7 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#include "string.H"
-#include "stringOps.H"
-#include "dictionary.H"
-#include "IOstreams.H"
-#include "OSspecific.H"
-
+#include "fieldExprFwd.H"
 #include "int.H"
 #include "uint.H"
 #include "scalar.H"
@@ -41,7 +36,10 @@ Description
 #include "fileName.H"
 #include "stringList.H"
 #include "stringOps.H"
-#include "fieldExprFwd.H"
+#include "dictionary.H"
+#include "IOstreams.H"
+#include "OSspecific.H"
+
 
 using namespace Foam;
 

applications/utilities/preProcessing/PDR/pdrFields/PDRpatchDef.H

@@ -38,7 +38,7 @@ SourceFiles
 #ifndef PDRpatchDef_H
 #define PDRpatchDef_H
 
-#include "string.H"
+#include "word.H"
 #include "scalar.H"
 #include "Enum.H"
 

applications/utilities/preProcessing/foamUpgradeCyclics/foamUpgradeCyclics.C

@@ -58,7 +58,6 @@ Usage
 #include "volFields.H"
 #include "pointFields.H"
 #include "surfaceFields.H"
-#include "string.H"
 
 using namespace Foam;