Meson is a far more robust build framework, compared to autotools. This
greatly simplifies adding new features, since it's far easier to
maintain a set of meson.build files vs the autotools mishmash.
DEPRECATION NOTICE: Autotools based build is deprecated and will be
removed in the future.
Prior to this change, the Git version was only getting generated when
the call was made to autoreconf. This was resulting in stale version
info.
This change, by contrast, generates the build info at the call to make.
While this doesn't completely eliminate the stale version issue, it's
easier to work around, by simply running `make clean`, `make`.
nirenjan