Switched from direct git to codeload. Should make it more reliable.

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>

Switch to git repo to properly set tarball filename

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

Signed-off-by: Chih-Wei Chen <changeway@gmail.com>

Signed-off-by: Chih-Wei Chen <changeway@gmail.com>

Config.in for libxml2/expat XML library choice

Signed-off-by: Chih-Wei Chen <changeway@gmail.com>