Bump GPLv2+ to GPLv3+ for some files, clarify BSD 2-clause.
Everything else stays under GPLv3+.
New Linking Exception exempts resulting executables from LGPLv3 section 4.
Add CONTRIBUTORS file to keep track of licensing.
Remove 'Copyright Red Hat Inc' comments.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Using libattr's <xattr/xattr.h> requires consumers to explicitly include
<sys/types.h> first, but glibc's header in sys/ already contains the include.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>