Doom: Reduced strength of default glow effect for FWATER

The default glow has now been reduced further, making it look less
like a glowing etheral body and more like the earthly liquid we are
familiar with.

The glow is intended to suggest caustic light interaction (perhaps
one day, we might do it for real).

doomsday/plugins/jdoom/defs/doom1/materials.ded

@@ -69,29 +69,29 @@ Material Mods "flats:LAVA4" {
 
 Material Mods "flats:FWATER1" {
   Layer {
-      Stage { Glow = .175; Tics = 24; Rnd = .5; }
-      Stage { Glow = .1;   Tics = 24; Rnd = .5; }
+      Stage { Glow = .058; Tics = 24; Rnd = .5; }
+      Stage { Glow = .033; Tics = 24; Rnd = .5; }
   }
 }
 
 Material Mods "flats:FWATER2" {
   Layer {
-      Stage { Glow = .175; Tics = 24; Rnd = .5; }
-      Stage { Glow = .1;   Tics = 24; Rnd = .5; }
+      Stage { Glow = .058; Tics = 24; Rnd = .5; }
+      Stage { Glow = .033; Tics = 24; Rnd = .5; }
   }
 }
 
 Material Mods "flats:FWATER3" {
   Layer {
-      Stage { Glow = .175; Tics = 24; Rnd = .5; }
-      Stage { Glow = .1;   Tics = 24; Rnd = .5; }
+      Stage { Glow = .058; Tics = 24; Rnd = .5; }
+      Stage { Glow = .033; Tics = 24; Rnd = .5; }
   }
 }
 
 Material Mods "flats:FWATER4" {
   Layer {
-      Stage { Glow = .175; Tics = 24; Rnd = .5; }
-      Stage { Glow = .1;   Tics = 24; Rnd = .5; }
+      Stage { Glow = .058; Tics = 24; Rnd = .5; }
+      Stage { Glow = .033; Tics = 24; Rnd = .5; }
   }
 }