Recalbox 8 support&fixes

-Fixed bug where launCharc did not recognize certain Recalbox installations where hostname was not just RECALBOX
-Fixed bug where fopen() together with fork() made launCharc not write all its intended output lines to the log file
-Finally fixed the argument parser, so that launCharc can now be run with any combination of the current
arguments nomap, keybswap and verbose, not only one at a time, like earlier
-Tighter removal of certain control character key combinations that could interfere with the game(pad) controls
during gameplay
-Moved termfix' ioctl calls into its own variadic function, where different combinations of various
ioctl calls can be chosen dynamically according to needs
-General refactoring and tightening of code flow and logic, pluss various other minor bugfixes

-Tested on Recalbox version 8.0 and RetroPie 4.7.3, Linux kernels v5.x and 4.x, respectively
-Next up: Automatic installations scripts, with and without HDMI sound, for Recalbox v8.0
-STAY TUNED!