system libraries copied on make install

[ddeconinck]

It seems that the following libraries are copied to the coolfluid libs dir on make install

libdl-2.15.so
libm-2.15.so
libnsl-2.15.so
libutil-2.15.so

This is a problem as they are system libraries which should already be in the system path, and if the coolfluid lib path is put first, these libraries are used instead of the default ones (for all system commands).

Bonus issue: a directory boost is also created in the root directory / when running sudo make install, containing include headers from boost

[ddeconinck]

fix pending (already commited in my fork)