Add release script
Add release script

This script runs the commands necessary to generate a source
tarball and checksums to validate it.

Signed-off-by: Paul E. Murphy <bcb79dc2d3103f301c432ff2685f8b89fad82826@linux.vnet.ibm.com>

pmur/libauxv,pmur/libauxv,Libauxv/libauxv,Libauxv/libauxv