ts 0.7.4

[Schamschula (Marius Schamschula)]

I've created a port for ts (task spooler) version 0.7.4.

task spooler is a Unix batch system where the tasks spooled run one after the other. The amount of jobs to run at once can be set at any 
time. Each user in each system has his own job queue. The tasks are run in the correct context (that of enqueue) from any shell/process, 
and its output/results can be easily watched. It is very useful when you know that your commands depend on a lot of RAM, a lot of disk 
use, give a lot of output, or for whatever reason it's better not to run them all at the same time, while you want to keep your resources 
busy for maximum benfit. Its interface allows using it easily in scripts.

[ryandesign (Ryan Carsten Schmidt)]

Thanks.

[ryandesign (Ryan Carsten Schmidt)]

Committed in r125180.

Rather than use reinplace to change the prefix in the Makefile, I decided to pass it as an argument to make install; this is what the README suggests doing.

I also added a post-destroot block to install the documentation files.

This port conflicts with the moreutils port; both want to install a ts program and manpage.

Be sure to send your patch which enables DESTDIR support to the developers so they can include it in a future version.