Compiled Lua modules must not link against liblua.

--- a/bindings/lua/Makefile.am
+++ b/bindings/lua/Makefile.am
@@ -9,7 +9,7 @@
 
 AM_CPPFLAGS = -I@top_srcdir@ -I@top_builddir@/src/include -I@top_srcdir@/src/include -I@top_builddir@/src/libprelude-error -I@top_srcdir@/bindings/c++/include @LUA_CFLAGS@ -I@top_srcdir@/libmissing -I@top_builddir@/libmissing
 
-prelude_la_LDFLAGS = -module -avoid-version @LUA_LIBS@
+prelude_la_LDFLAGS = -module -avoid-version
 prelude_la_LIBADD = $(top_builddir)/bindings/c++/.libs/libpreludecpp.la
 prelude_la_SOURCES = prelude.cxx
 preludedir = $(libdir)/lua/@LUA_VERSION@