Paridroid 2.7.0.1.0 release candidate

[Andreas Enge <andreas.enge@inria.fr>]

It would be nice to release, at more or less the same time as the new
stable release of pari/gp, an "official" version of paridroid.
As version number, we opted for the pari/gp version ("2.7.0"), which is
the main "content", followed by two digits for the paridroid  version
(which will be "1.0").

A release candidate can be downloaded at
   http://www.multiprecision.org/paridroid/PariDroid-2.7.0.1.0rc1.apk

Testing and reporting of release critical bugs would be very welcome.

I am aware there are quite a few non-critical things to improve; reports
are also welcome, but will only be taken into account after the release.

Thanks for your help,

Andreas