Using the tarball allows getting rid of autoreconf and speeding up the build.
Also easier to bump the package.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

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>

Without the trailing _S_ the variable is not considered at all.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>