The pycrypto module sources can be used for both python2 and python3,
but a recipe for python3 was missing, so add it.
Additionally, since the sources (and thus the patches) are shared
between both versions, move the SRC_URI (same on both recipes) to the
common 'python-pycrypto.inc' file, to avoid duplication.
Also, to use the same patch files for both python2 and python3 without
having to duplicate them over 2 folders, change 'python-pycrypto.inc' so
that FILESEXTRAPATHS is prepended with the 'python-pycrypto' local dir
for both versions instead of having that dir named after the package
The python3 recipe is basically the same as for python2, but using
Signed-off-by: Ricardo Silva <email@example.com>
Signed-off-by: Armin Kuster <firstname.lastname@example.org>