Description of problem:

Rotated messages files like /var/log/messages-20120401 and cron log file (/var/log/cron) are not syntax highlighted by vim.

Current hg mirror of vim sources shows that this is already fixed in vim by adding "-[0-9]*" to the au command:

http://code.google.com/p/vim/source/browse/runtime/filetype.vim#1125

So, when I use that au command, problem is gone.

Version-Release number of selected component (if applicable):
vim-filesystem-7.3.444-1.fc17.x86_64
vim-enhanced-7.3.444-1.fc17.x86_64
vim-minimal-7.3.444-1.fc17.x86_64
vim-common-7.3.444-1.fc17.x86_64

Steps to Reproduce:
1. sudo vim /var/log/messages-*