[TYPO3-english] Filter installable extension

[Frédéric Ollivier]

Hi all

Because PowerMail is available in alpha release with version 2 and
there is a security update 1.6.8, I'm asking myself, with TYPO 4.7,
how to force installation of 1.6.8 instead of 2.0.

Maybe it would be preferable to be able to install stable release of
ext by default and to have an option to allow other level of
completion.

Finally I've downloaded T3X from TER and installed from file but was
thinking other ways could be easier

Any idea would be of great help.

Frederic