fix Makefile chmod (644)
replace MD5SUM with HASH
add PKG_MIRROR_HASH when PKG_SOURCE_PROTO:=git

(PKG_SOURCE_PROTO:=svn tarballs are not reproducible for now)

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

This only replicates the existing python-smbus package into Python 3

Signed-off-by: Paulo Costa <me@paulo.costa.nom.br>

lm-sensors.org is down, again...

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

remove archive.org download link as lm-sensors.org seems to be working
again.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

- license and maintainer added
 - bumped to recent release source tarball instead of SVN source
 - add archive.org mirror to work-around the lm-sensors.org domain
   currently being broken...

Signed-off-by: Daniel Golle <daniel@makrotopia.org>