reorganized Host_Init a bit, merged away a few functions (such as COM_CheckRegistered...

reorganized Host_Init a bit, merged away a few functions (such as COM_CheckRegistered and COM_InitArgv) and changed some others, now registers several cvars earlier in the startup process
integrated patch from div0 for sys_colortranslation and sys_specialcharactertranslation cvars which control the translation of color codes and Quake characters for terminal output on stdout, this gets rid of the hideous ^7 on every line and makes colored text show up properly using ANSI color codes on most platforms (on windows the color codes are simply stripped because ANSI is not supported by windows terminals)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@6558 d7cf8633-e32d-0410-b094-e92efae38249