Added missing header and added casts.

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

glibc needs an extra header included.

Also cast time values to 64-bit in preparation for 64-bit time_t for
32-bit platforms.

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

busybox ps and procps-ng ps have different outputs. Force busybox ps usage
to fix this.

Also cleaned up the script using shellcheck.

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

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>

Signed-off-by: Ted Hess <thess@kitschensync.net>