Add symlinks for hardcoded Makefiles in out of tree builds

Author: psgreco

configure.ac

@@ -1978,6 +1978,9 @@ AC_CONFIG_LINKS([test/functional/test_runner.py:test/functional/test_runner.py])
 AC_CONFIG_LINKS([test/fuzz/test_runner.py:test/fuzz/test_runner.py])
 AC_CONFIG_LINKS([test/util/test_runner.py:test/util/test_runner.py])
 AC_CONFIG_LINKS([test/util/rpcauth-test.py:test/util/rpcauth-test.py])
+AC_CONFIG_LINKS([src/qt/Makefile:src/qt/Makefile])
+AC_CONFIG_LINKS([src/qt/test/Makefile:src/qt/test/Makefile])
+AC_CONFIG_LINKS([src/test/Makefile:src/test/Makefile])
 
 dnl boost's m4 checks do something really nasty: they export these vars. As a
 dnl result, they leak into secp256k1's configure and crazy things happen.