Strip new lines from proc count in nightly (et al).

Before this change, the make calls, `make -j$num_procs ... compiler`, were
putting the target on a separate line. This caused everything that uses these
scripts to fail last night.
Merge pull request #813 from thomasvandoren/fix-nightly-num-procs

Strip new lines from proc count in nightly (et al).

Before this change, the make calls, `make -j$num_procs ... compiler`, were
putting the target on a separate line. This caused everything that uses these
scripts to fail last night.