debian: Fill in gecos field for jenkins user

Otherwise when Jenkins runs git, git will complain that the identity is
not set up correctly and will fail.
fix computeRelativeNamesAfterRenaming for job tbs using same prefix in name
Fixed Brazilian Portuguese translation of "Full Log".

The translation was too literal: the log is not full as in a cup of water (this is what "cheio" means), it is full because it is not a partial object.
Comment.
[FIXED JENKINS-18775] Integrated XStream 1.4.4-jenkins-4 with attempted fix for race condition.
Merge pull request #921 from brauliobezerra/patch-1

Thanks
Merge REMERGE_HEAD into HEAD
Merge pull request #591 from petere/debian-gecos

debian: Fill in gecos field for jenkins user
Merge pull request #918 from evernat/master

Close JarFile resources in PluginWrapper and UpdateCenter
Optimize String appends in hudson.Functions