Add .gitignore for tsm41

Add .gitignore for tsm41

Just ignore some files created during the build.

Reviewed-on: http://gerrit.openafs.org/3435
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Tested-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 3c370ed1e58310cb0202a5d2c826ba6569da831c)

Change-Id: I774254ebb7d0cd45f162c7b74df1f0b016d2f7be
Reviewed-on: http://gerrit.openafs.org/4013
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>