babeltrace: update to 1.4.0

babeltrace: update to 1.4.0

Switch to using tarballs for upstream releases.

Drop merged patches.

Add a --disable-debug-info parameter to ./configure, as it otherwise
attempts to execute a small test binary. If this (new) feature is truly needed,
we can set up a qemu wrapper later, or patch autoconf macros.

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>