Packaging/Guidelines - Usage of %{optflags}, Source tag

[Till Maas]

Hiyas,

at this time the Packaging-Guidelines do not mention whether or 
not %{optflags} should / must be used. They are used everytime %configure is 
executed, but there are also packages that do not have a ./configure script 
and for this reason would not use the %{optflags}. The flags in %{optflags} 
contain not only optimization but also security flags. For this reason I 
suggest that the Guidelines state that they have to be used. This will also 
help new contributors to know about this.

As well the Guidelines do not mention that the Source tag with upstream source 
should be a url / downloadable. Maybe this can be added, too.

Regards,
Till