Get the correct libnxz package version automatically
Get the correct libnxz package version automatically

update_revision.sh is still setting libnxz version to v0.61, even though v0.62
has been out for almost 6 months. Since the project now uses autoconf, we can
parse the AC_INIT string in configure.ac to properly get the latest version.

Signed-off-by: Matheus Castanho <531577e2ea6a1eef9cdabce582a2b074021a1180@linux.ibm.com>

advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain