travis: let travis use shared libs for tests

.travis.yml

@@ -59,6 +59,7 @@ script:
     - cd bitcoin-$HOST
     - ./configure --cache-file=../config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
     - make $MAKEJOBS $GOAL || ( echo "Build failure. Verbose build follows." && make $GOAL V=1 ; false )
+    - export LD_LIBRARY_PATH=$TRAVIS_BUILD_DIR/depends/$HOST/lib
     - if [ "$RUN_TESTS" = "true" ]; then make check; fi
     - if [ "$RUN_TESTS" = "true" ]; then qa/pull-tester/rpc-tests.sh; fi
 after_script: