ANALYSIS
--------
 
When we open the view using open_new_frm() ,it doesnt set the
table-list->table variable and any access to table_list->table 
will cause a crash.
 
FIX
---
 
Added a check during execution of the alter partition to return 
error if table is view.

[http://rb.no.oracle.com/rb/r/2001/  Approved by Mattias J ]