Merge pull request #707 in SNORT/snort3 from misc_fixes to master

Merge pull request #707 in SNORT/snort3 from misc_fixes to master

Squashed commit of the following:

commit d796882a69f686aeb582f70a1ff6b94a44bf05ad
Author: Russ Combs <rucombs@cisco.com>
Date:   Wed Nov 16 09:38:56 2016 -0500

    revert to dumping 16 bytes per line by default

commit ae16bba4a86d6cdab6af1c38556cb3718fa1ee24
Author: Russ Combs <rucombs@cisco.com>
Date:   Wed Nov 16 09:03:20 2016 -0500

    fix out-of-tree doc builds
    fix image sizes to fit page; thanks to wyatuestc for reporting the issue
    change -L to -K in README and manual; thanks to jncornett for reporting the issue

commit fc11b8819ee95214023d973e0bd376ef0f630dba
Author: Russ Combs <rucombs@cisco.com>
Date:   Tue Nov 15 07:34:09 2016 -0500

    fix fast pattern selection when multiple designated
    thanks to j.mcdowell@titanicsystems.com for reporting the issue