[syslog-ng] Problems trying to compile syslog-ng 3.6.4 on Solaris 11.2 (SPARC)

With this patch, syslog-ng 3.6.4 compiles on Solaris 11.2 (X86-64). It will work on SPARC as well. https://github.com/balabit/syslog-ng/pull/543 -Adam Arsenault