Add ability to install into dest_dir that independed of install_dir

Currently omnibus-software install into prefix, that sometimes not needed,
this commit emulates DESTDIR makefile behaviour

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
I'm check twice before running shebang fix task in omnibus-chef to check shebang lines.
In all cases it have correct values. If windows tests fails i'm ready to fix it.