server: minor syntax changes
server: increase sv_ghostradius range
client: retrieve also g_gametype and g_walljumps in CL_ParseServerInfo()
client: added cl_drawWalljump cvar: display an icon which tells to the client if he can walljump or not

The code has been excluded for the moment since it needs to be fine tuned. QVM is being slow in  updating pm_flags with the proper bit flag so I would need to implement everything engine side to match a possible walljump (don't know if it's worth)