test/dlopen: fix build for libtest.so
test/dlopen: fix build for libtest.so

needs -lpthread, recent addition of -z,defs and -z,now exposed this

Signed-off-by: Austin Foxley <65462a1d10372f5df6b6641242ca623823c369f3@cetoncorp.com>

joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc,joel-porquet/tsar-uclibc