Started implementing info/NodeInfo menu item.  Currently a dialog is
created with the index, x, y, z and code fields (not filled).  The dialog is not 
yet functional (pushing update just prints a message).
The user is now prompted to click a point in the grid when info/NodeInfo
is selected.  Then upon clicking a point the info for that node is retrieved
in the Fortran code and sent to the C code.  The C code currently displays
the index and code (integer) values in the GUI.
Consolidate info dialog code into XmDialogs.c.
Visual Fortran: Consolidate dialog code into QWDialogs.f90
Add index error traps for Get and Set Node and Element Info
Merge branch 'node_info'