Some URL fixes.

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

Changed URL to HTTPS as well.

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>

- add license info
 - add myself as maintainer
 - put in a "Languages" submenu
 - install pkgconfig .pc dev file

Signed-off-by: Nicolas Thill <nico@openwrt.org>