Merge pull request #135 in SNORT/snort3 from ~JOCORNET/snort3:mem_profiler to master

Merge pull request #135 in SNORT/snort3 from ~JOCORNET/snort3:mem_profiler to master

Squashed commit of the following:

commit 3b843fdc2a341e22d63840d72900d90767df31c9
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Tue Nov 17 15:56:43 2015 -0500

    hardened PERF_PROFILING

commit 6eb3d6f8ab4d474344c5ff2143206f23e9c96aa4
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Tue Nov 17 13:47:30 2015 -0500

    fixed typo

commit 45c6d8816b00fdf793704e733f20c0f0d863708e
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Mon Nov 16 18:03:38 2015 -0500

    updated profiler unit tests

commit 6a6bb3900277062d25b2c06b9c5cd9b246e09b68
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Mon Nov 16 17:00:45 2015 -0500

    fluff

commit ef2a51bcff9e5f59bd6087ad4356c1f64c5fa23a
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Mon Nov 16 16:53:34 2015 -0500

    updates

commit 8f3563c3b3f2e6df894aa98d25390cd1f5c602d0
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Mon Nov 16 15:47:33 2015 -0500

    added clock type definitions

commit a426b1be454df278cefd65cf25f59af6247e57e2
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Mon Nov 16 15:43:53 2015 -0500

    partial commit converted ticks to use high_resolution_clock duration

commit ad22683e444641f954e57de6194174e5add8305f
Author: Joel Cornett <joel.cornett@gmail.com>
Date:   Mon Nov 16 15:40:25 2015 -0500

    partial commit, updated build system in preparation for memory profiling