socketcand: remove trailing white spaces

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
socketcandcl: enable out-of-source build

Reference source file with $(srcdir).

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Merge pull request #4 from yegorich/fixes

socketcand: remove trailing white spaces
Merge pull request #5 from yegorich/out-of-src

socketcandcl: enable out-of-source build
Changed socketcandcl default port to socketcand default port.
Use PORT macro in print_usage

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Merge pull request #6 from yegorich/port

Use PORT macro in print_usage