init gnuplot, Iperf, nano, parallel

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
init Stow

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
fix source_urls lines for sourceforge

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Merge pull request #126 from fgeorgatos/contrib_gnuplot-Iperf-nano-parallel-Stow

Contrib gnuplot iperf nano parallel stow