gnu_java_math_GMP.c:1135:13: error: this statement may fall through [-Werror=implicit-fallthrough=]
         res = mpz_popcount (_this);
         ~~~~^~~~~~~~~~~~~~~~~~~~~~
gnu_java_math_GMP.c:1136:7: note: here
       default:
       ^~~~~~~

Signed-off-by: Guo Li <uxgood.org@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>

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

Signed-off-by: Dana H. Myers <k6jq@comcast.net>