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>

Signed-off-by: Federico Di Marco <fededim@gmail.com>

- moved from net to mail category
- removed no-ssl package and added ssl support as configuration option (default enabled)
- added configuration option to support extended logging (default disabled)
- disabled build of test tools
- added LEDE compatibility (support for openssl without SSL3)

Signed-off-by: Federico Di Marco <fededim@gmail.com>