Upgrade axa to version 1.3.4:

• Update copyright for 2016 where missing
• Fix static analyzer warnings
• Add missing libprotobuf_c_CFLAGS to Makefile.am
• Fix typos in documentation
• Fix typos in comments
• Fix typo in json-schema.yaml
• Update sratool/radtool in-tool contextual help
• Update sratunnel/radtunnel usage()
• Update man pages for missing commands/options
• Fix bug in axa_link_certs where it would bail if no symlinks existed
• Fix bug in axa_link_certs where it wouldn't process relative pathnames

SHEBANG fix cert_tools/axa_link_certs.in

Sponsored by: Farsight Security, Inc.