bot: disable spray logo task on xash3d engine

fix: crash on aarch64 builds (ref #667)
nav: improved player avoidance
nav: improved handling of short path radii
conf: control min and max cvar values
build: probably fix i386 build when building with cmake (untested)

src/tasks.cpp

@@ -100,6 +100,7 @@ void Bot::normal_ () {
       if (!(m_states & (Sense::SeeingEnemy | Sense::SuspectEnemy))
          && m_seeEnemyTime + 5.0f < game.time ()
          && !m_reloadState && m_timeLogoSpray < game.time ()
+         && !game.is (GameFlags::Xash3D)
          && cv_spraypaints
          && rg.chance (50)
          && m_moveSpeed > getShiftSpeed ()