gummi: predictable filenames in /tmp

Package: gummi
Version: 0.6.5-3
Severity: normal

I opened a file called thesis.tex in gummi, this created the following files in /tmp:

-rw-r--r-- 1 jak jak 3196 Jul 29 21:39 .thesis.tex.aux
-rw-r--r-- 1 jak jak 42672 Jul 29 21:39 .thesis.tex.log
-rw-r--r-- 1 jak jak 559 Jul 29 21:39 .thesis.tex.out
-rw-r--r-- 1 jak jak 266755 Jul 29 21:39 .thesis.tex.pdf
-rw-r--r-- 1 jak jak 885 Jul 29 21:39 .thesis.tex.toc

Obviously, this has serious implications for multi-user systems, because two users editing a file with the same name would write to the same files in /tmp.