renamed to be consistent with new solver naming convention

applications/solvers/heatTransfer/buoyantFoam/Make/files

-buoyantFoam.C
-
-EXE = $(FOAM_APPBIN)/buoyantFoam

applications/solvers/heatTransfer/buoyantPisoFoam/Make/files

+buoyantPisoFoam.C
+
+EXE = $(FOAM_APPBIN)/buoyantPisoFoam

applications/solvers/heatTransfer/buoyantFoam/buoyantFoam.C → applications/solvers/heatTransfer/buoyantPisoFoam/buoyantPisoFoam.C

@@ -23,7 +23,7 @@ License
     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 
 Application
-    buoyantFoam
+    buoyantPisoFoam
 
 Description
     Transient Solver for buoyant, turbulent flow of compressible fluids for