Cleanup

Removed PHP script used to generate maps.
Makefile Update - Linux

Added makefiles so that the server builds on Linux.

Automatic dependency generation does not seem to be working as of yet.
Hardware Concurrency - Linux

Added Linux support to the HardwareConcurrency function.
Module Loader - Linux

Fixed Linux support in the rewritten ModuleLoader class.
Column Concurrency Logging

Prevented the column concurrency value logging from outputting values of zero.
HTTPHandler Use After Free

Fixed a use after free bug address sanitizer detected in the HTTPHandler class.
PluginMessages Fix

The PluginMessages class was attempting to match the regular expression which checks whether a channel is considered built-in or not after moving the string-in-question, resulting in the match always failing.