fixed set but unused variables

Conflicts:

	src/comforce.c
	src/debug.c
	src/p3m-dipolar.c
	src/tcl/statistics_tcl.c
Merge remote-tracking branch 'trichter/3.1' into 3.1
Added Jenkins build scripts.
(cherry picked from commit cf89aa8441368812af0b5fd732a63b2b3e951a72)
Use 4 cores instead of 2.
(cherry picked from commit 4eb92ddf31ff90cdc8647711fbd1105270929ff2)
Added plain nightly job
(cherry picked from commit d44ea9abefa9927a3c84513c6c732419ee55cf48)
Renice jobs.
(cherry picked from commit 8992c4155b6b05fd558a873d649e413ea89f1a90)
CUDA job uses 4 cores.
(cherry picked from commit 441424aa8d3a6db31f2ca0fbed61bf14d3761ca0)
Some more jobs with 4 cpus.
(cherry picked from commit 0d73fdf9dcdc4d214df0b8b2efd946c243c9975f)
Fixed CPU_COUNT
(cherry picked from commit 2ac3c25abc5fdd205b76f23244a86d8134dee525)
Took out pushes from script, needs to be done in jenkins.
Fixd CUDA build for 3.1
Renice jenkins jobs.
renice jenkins jobs.
Renice.
Netx try.
Next try.
No renice.
Now: renice.