Add Rim Lighting to option menus
Default file name (timestamp) for /condump.
Warn about (some) known software OpenGL renderers.
Changed 'Anisotropic Filtering' to a MULTIX option and added the options No, 2x, 4x, and 8x.  Previously enabling Anisotropic Filtering only set the value at 1, which made no visual difference.
Removed "uiScript glCustom," from Anisotropic Filtering.
Use × in the UI mode list.
Insert ‘server’ in dedicated servers' curses console title.
Avoid code repetition by factoring out into NET_SetOOBHeader.
Eliminate the duplicated *_Big functions.
Fix stack corruption

If the original info string is longer than half of the buffer size, the
memmove could affect bytes after the end of the buffer.
fix #177 by actually calling the disconnect function instead of using always the fallback error-disconnect

(the if-condition was never met, since the command itself will never set the state to CA_DISCONNECTED)
SCR_StopCinema gets already called within Cl_Disconnect
the error disconnect now only gets used if the disconnect function doesn't suceed to set CA_DISCONNECTED
remove dead code - the disconnect function will never return without setting ca_disconnect, unless the client is not running, in which case we dont need to disconnect it anyway
make server shutdown on ERR_DROP again like before, as it is apparently expected in several locations within the server code
remove unused (and even abused) error type and its handling
print out server disconnection messages like results of a kick or ban to console as well
fix #178: cvar ui_stages leaks stage-information about both teams to everone
Fix signedness error introduced by 599b800b, also fix spacing.
Merge remote-tracking branch 'tim/bug/#177-disconnect-cmd-error'
Merge remote-tracking branch 'tim/bug/#178-ui_stages'
Fix up BG_Alloc (debug mode): should call memset().