Merge pull request #2037 in SNORT/snort3 from ~DAVMCPHE/snort3:nuking_reload_errors...

Merge pull request #2037 in SNORT/snort3 from ~DAVMCPHE/snort3:nuking_reload_errors to master

Squashed commit of the following:

commit 9d50248d9b1768509c9876ed3ed53a3c52cc8d91
Author: davis mcpherson <davmcphe@cisco.com>
Date:   Thu Feb 27 21:12:31 2020 -0500

    ghash: fix thread race condition with GHash member variables when a GHash instance is global

commit 8b7b0bab38e9d567e81acf784b39fe4eae4d6534
Author: davis mcpherson <davmcphe@cisco.com>
Date:   Mon Feb 10 17:24:28 2020 -0500

    snort_config: footprint REG_TEST, no check for stream inspector add/rm, etc

    reload: add description of reload error to the response message of the reload_config command

    ips_base64: add logic to call ips option tinit method on reload if not previously called

    hash: delete unused sfmemcap.[h|cc] and remove unnecessary includes