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>

the makefile trues to copy a file that does not exist

Signed-off-by: John Crispin <blogic@openwrt.org>

also bump version, use new download URL and add myself as
maintainer.

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