Add a few missing entries to our .gitignores

Add a few missing entries to our .gitignores

Add a couple of build products to the relevant .gitignore files

Reviewed-on: http://gerrit.openafs.org/2599
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 9da71758f194b98e1be3dee8d588b703874ea9a6)

Change-Id: I0d81739fbadad6a1787e17863df0ee6dcdd083bf
Reviewed-on: http://gerrit.openafs.org/4000
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>