Added nicer looking glass to the Biorifle model.

Fix minigun breakage when tapping fire.
Updated Blender project files to 2.8.
Update for new DT backpack mesh.

gldefs.txt

@@ -757,18 +757,24 @@ HardwareShader Texture "models/OLSMP.png"
 {
 	Shader "shaders/glsl/MeshEnviroMapMasked.fp"
 	Texture "masktex" "models/OLSMP_m.png"
-	texture "envtex" "models/OLSMP_env.png"
+	Texture "envtex" "models/OLSMP_env.png"
 }
 HardwareShader Texture "models/OLSMP_.png"
 {
 	Shader "shaders/glsl/MeshEnviroMapMasked_AmbientGlow.fp"
 	Texture "masktex" "models/OLSMP_m.png"
-	texture "envtex" "models/OLSMP_env.png"
+	Texture "envtex" "models/OLSMP_env.png"
 }
 HardwareShader Texture "models/JSentry1_.png"
 {
 	Shader "shaders/glsl/AmbientGlow.fp"
 }
+HardwareShader Texture "models/Glass2.png"
+{
+	Shader "shaders/glsl/MeshEnviroMapMasked.fp"
+	Texture "masktex" "models/Glass2_m.png"
+	Texture "envtex" "models/NyLeve_env.png"
+}
 // PP shaders
 HardwareShader PostProcess scene
 {

modeldef.ubiorifle

@@ -294,7 +294,8 @@ Model "UBioRifle"
 {
 	Path "models"
 	Model 0 "BRifle_d.3d"
-	Skin 0 "JBrifle1.png"
+	SurfaceSkin 0 0 "JBrifle1.png"
+	SurfaceSkin 0 1 "Glass2.png"
 	Scale 0.2 -0.2 0.2
 	AngleOffset -90
 	Offset 7 -20 -11.5

modeldef.umisc

@@ -1,12 +1,11 @@
 Model "UnrealBackpack"
 {
 	Path "models"
-	Model 0 "Backpack2_d.3d"	// cheaply edited out of SelectionMale1 (offsets weren't even readjusted, so I have to do it here)
+	Model 0 "Backpack2_d.3d"	// edited out of SelectionMale1
 	Skin 0 "bpak.png"
-	Offset -15.795 13.1625 -16	// calculating the X and Y offsets was hard, but I'm glad I added the "estimated center" feature in umeshinfo now
-	Scale 0.36 0.3 0.3
-	AngleOffset 90
-	RollOffset -90
+	ZOffset 16
+	Scale 0.3 0.3 0.36
+	AngleOffset -90
 	ROTATING
 
 	FrameIndex BPAK A 0 0

zscript/uminigun.zsc

@@ -192,6 +192,8 @@ Class UMinigun : UnrealWeapon
 	AltFire:
 		MGNW A 0 A_PlaySound("umini/wind",CHAN_WEAPON,Dampener.Active(self)?.1:1.);
 		MGNW ABCDEFGHIJKLMNO 1;
+		MGNW O 0 A_Refire(1);
+		Goto Release;
 	Hold:
 		MGNF A 0
 		{