lua: don't be fancy when creating shared library

(Possibly) fixes #5354

The lua shared library patch was creating the shared library with
-nostdlib -lgcc for some unknown reason, which most likely is
the reason for the link issue reported in #5354.

Fix it by dropping these arguments, so gcc gets to figure out itself
what dependencies are needed.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/lua/lua-02-shared-libs-for-lua.patch

@@ -39,7 +39,7 @@ Index: b/src/Makefile
 -$(LUA_T): $(LUA_O) $(LUA_A)
 -	$(CC) -o $@ $(MYLDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
 +$(LUA_SO): $(CORE_O) $(LIB_O)
-+	$(CC) -o $@.$(PKG_VERSION) -shared -Wl,-soname="$@.$(PKG_VERSION)" $? -nostdlib -lgcc
++	$(CC) -o $@.$(PKG_VERSION) -shared -Wl,-soname="$@.$(PKG_VERSION)" $?
 +	ln -fs $@.$(PKG_VERSION) $@
 +
 +$(LUA_T): $(LUA_O) $(LUA_SO)