Reverting SVN r17061

Making --enable-debug useful once again. in r17061 lighta made --enable-debug enforce -wconversion, -Wno-switch, and other options (instead of making them optional) and by doing that lighta cluttered --enable-debug output making it incredibly hard to find important errors

Signed-off-by: shennetsind <ind@henn.et>
Merge branch 'master' of https://github.com/HerculesWS/Hercules