Add option to give Redeemer lowest selection priority so it's not autoselected when out of ammo on other weapons (enabled by default).

Switch ambientglow+brightmap shader to actually use brightmap textures directly. This bumps the version requirement to 3.5.0 and makes it sorta-possible to play with software rendering without seeing "invisible pickup models".
Re-ran all textures through optipng.
All add-ons have been updated accordingly.

shaders/glsl/AmbientGlow_Brightmapped.fp

@@ -4,12 +4,12 @@
 #define PI 3.14159265
 vec4 ProcessLight( vec4 color )
 {
-	float bright = getTexel(vTexCoord.st).a;
+	float bright = texture(brighttex,vTexCoord.st).x;
 	float glow = (1.0+sin(timer*2*PI))*0.25;
 	return vec4(min(color.rgb+vec3(bright)+vec3(glow),1.0),color.a);
 }
 
 vec4 ProcessTexel()
 {
-	return vec4(getTexel(vTexCoord.st).rgb,1.0);
+	return getTexel(vTexCoord.st);
 }

shaders/glsl/MeshEnviroMap_AmbientGlow.fp

@@ -2,7 +2,7 @@
 #define PI 3.14159265
 vec4 ProcessLight( vec4 color )
 {
-	float glow = (1.0+sin(timer*4*PI))*0.25;
+	float glow = (1.0+sin(timer*2*PI))*0.25;
 	return vec4(min(color.rgb+vec3(glow),1.0),color.a);
 }