Bug#761219: Also update/clarify when real package has same name as virtual package

[Sean Whitton <spwhitton@spwhitton.name>]

Hello,

Something else that might need updating in light of dpkg's support for
versioned Provides: is the advice that

    If a relationship field has a version number attached, only real
    packages will be considered to see whether the relationship is
    satisfied (or the prohibition violated, for a conflict or
    breakage). In other words, if a version number is specified, this is
    a request to ignore all Provides for that package name and consider
    only real packages.

Would a versioned Provides:, too, get ignored if there is real package
with the same name present?

-- 
Sean Whitton