Linker command line order is important: -la -lb means that
liba can depend on libb, but not the other way around. The
way make-tinyssh.sh constructs the libs variable from the
LIBS environment variable should not reverse the order.
Also, local libs like libtinysshcrypto.a should be listed
first, so they correctly resolve local symbols (this is
important when linking against skalibs, which exports symbols
like uint32_unpack_big() with a different signature).

Signed-off-by: Laurent Bercot <ska@appnovation.com>