Signed-off-by: Dmitry V. Zimin <pfzim@mail.ru>

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 commit will fix compile warning as below

tmp/.config-package.in:22096:warning: multi-line strings not supported

Signed-off-by: Shuoyao Wang <wong.syrone@gmail.com>

Signed-off-by: Dmitry V. Zimin <pfzim@mail.ru>