fix typo in distribution name
automake >= 1.13 uses parallel tests by default; ensure serial tests are used
explicitly add dependency libraries to liblua.so

Systems which do not support indirect symbol resolution (Ubuntu >=
11.10, Debian > Wheezy(?), Fedora >=13) require that liblua.so be
linked with -lm and -ldl, else linking against it will cause
undefined symbol errors in liblua.so.