wmakeLnIncludeAll: Add support for -IlnInclude

Resolves bug-report https://bugs.openfoam.org/view.php?id=2925

wmake/wmakeLnIncludeAll

@@ -122,7 +122,7 @@ then
         $WM_PROJECT_DIR/src/$WM_PROJECT
         $WM_PROJECT_DIR/src/OSspecific/$WM_OSTYPE
         $(grep -e '-I.*lnInclude' $MakeDir/options |
-        sed -e 's%-I\([.$(a-zA-Z0-9_)/]*\)/lnInclude.*%\1%' -e 's/$(\(.*\))/$\1/')"
+        sed -e 's%-I\([.$(a-zA-Z0-9_)/]*\)lnInclude.*%\1%' -e 's/$(\(.*\))/$\1/')"
 
     printed=
     for d in $includeDirs