mrouted v3.9.8

Changes & New Features

• New option -D or --startup-delay to tune the initial delay during which routes are exchanged, but not applied.
• The mrouted man page has been cleaned up and sections clarfied.
• Add -D_DEFAULT_SOURCE for building on GLIBC v2.20, and later.
• Sync with OpenBSD mrouted

Bug Fixes

• Matt Weber found and fixed a serious bug with DVMRP reports missing subnet (off by one error) which seems to have been introduced in v3.9.5. Issue #14
• Fix mtrace compilation with Clang 3.5, fix courtesy of FreeBSD. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196166 by Dimitry Andric (@DimitryAndric), heads-up by Olivier Cochard-Labbé (@ocochard)
• Minor warnings from scan-build (clang) also fixed. See the GIT log for more details.