Only install eglibc-specific dependencies when building for eglibc.
Tweak a test case that won't build with uclibc.
(From OE-Core rev: e28e04e26893416d577ee54e03019c03865e1bf6)
Signed-off-by: Björn Stenberg <bjst@enea.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>