Bug 189968

Description of problem:

vim version 7.0.d001-1 does not preserve the SE Linux context for the 
temporary file.

For example I have edited a file named "test.c" in my /tmp directory, and I 
display the SE Linux context while it's running:
$ ls -lZ test.c .test.c.swp
-rw-------  rjc      rjc      rjc:object_r:src_t               test.c
-rw-------  rjc      rjc      rjc:object_r:tmp_t               .test.c.swp
$

The file .test.c.swp should have the type src_t.  This is a more serious issue 
with Fedora Core 5 as the SE Linux context is used more for MCS.

I tried to write a patch to fix this but had to give up.  The code in vim is 
too difficult to manage.

If I was going to patch this I would prefer to do it by writing functions to 
copy the security data from one file to another and to store the security data 
to a memory region and to copy it from the memory region to a file.  Then such 
functions could be used for SE Linux security contexts, ACLs (Posix or NT - 
whichever is appropriate), and of course Unix permissions.