fix building with lua/tolua++ 5.3

conky.spec

@@ -61,6 +61,12 @@ It just keeps on given'er. Yeah.
 # remove -Werror from CFLAGS
 sed -i 's|-Werror||' cmake/ConkyBuildOptions.cmake
 
+# our tolua++ is linked with lua 5.3
+sed -i \
+       -e 's|\(LUA REQUIRED\) lua5.1 lua-5.1 lua51 lua|\1 lua>=5.3|' \
+       -e 's|\(NOT LUA_VERSION VERSION_LESS\) 5.2.0|\1 5.4.0|' \
+    cmake/ConkyPlatformChecks.cmake
+
 # remove executable bits from files included in %{_docdir}
 chmod a-x extras/convert.lua