Ferrite Core 3.1.2r1

Minor gitian build fixes, boost fixes. Small changes for improved Mac compatibility.
Documentation updates for dependencies and faster compilation.
Update of default installation path to C:\Program Files\Ferrite\ from C:\Program Files\_Ferrite_Core\ for Ferritext usage.

What's Changed

• v3.1.2 by @koh-gt in #53
• v3.1.2-2 - Boost build fix by @koh-gt in #54

Full Changelog: v3.1.1...v3.1.2r1