v1.15.1 draft

[GeckoEidechse]

Fixes:

Cast types in MAKEHOOK macro to follow C++ Standard (Launcher#489)
Use correctly typed values for variables (Launcher#486)
Remove pragma once from source file (Launcher#487)
Fix const pointer const (Launcher#488)
Add RelWithDebInfo configuration (Launcher#483)
Replace dependent names with explicit template definition (Launcher#490)
Code cleanup to improve compiler compatibility (Launcher#478)

Contributors:
@F1F7Y @Jan200101