or1k-elf-loader: make it compatible with C++

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
system: de1: add post build script

This is an example of post build script. It extracts and displays
fitting summary and Fmax for the design.

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
system: de1: set script file attibute to 'x'

ORPSoC now starts shell scripts without invoquing bash
(see commit 76dcafe76c92). So turn the script to an
executable.

Fix white spaces at the same time.

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>