Line-ending fixes for most of the remaining files.

Fixes line-endings for files with extensions vcd, cc, txt, bat, fxc, inc, lst,
proto, mak, mm, cfg, res, rc, def, vmt, vsh, vbsp, inl, asm, m4, vcproj,
vcxproj, sln, in, java, la, manifest, am, and rad.

Also fixes README, CONTRIBUTING, CONTRIBUTORS, LICENSE, CHANGES, COPYING, and
gitignore.

Finally, fixes executable bits.

sp/game/episodic/Scenes/episode_1/al_citadel_ExitNag03.vcd

@@ -1,73 +1,73 @@
-// Choreo version 1
-event section "p"
-{
-  time 1.824562 -1.000000
-  param "noaction"
-}
-actor "Alyx"
-{
-  channel "audio"
-  {
-    event generic "Exit Nag 3"
-    {
-      time 0.360703 4.617305
-      param "debugtext We've got to move on.  Hurry up and let's go."
-    }
-  }
-  channel "look at"
-  {
-    event face "face player"
-    {
-      time 0.185185 0.944444
-      param "!player"
-    }
-  }
-  channel "move to"
-  {
-  }
-  channel "faceTo"
-  {
-    event face "!player"
-    {
-      time 0.395868 1.338493
-      param "!player"
-    }
-  }
-  channel "Postures"
-  {
-  }
-  channel "Trigger"
-  {
-  }
-  channel "bodyges"
-  {
-  }
-  channel "Gestures"
-  {
-  }
-  channel "armpose"
-  {
-  }
-  channel "facial"
-  {
-  }
-  channel "head"
-  {
-  }
-  channel "seq"
-  {
-  }
-  faceposermodel "U:\HL2\hl2\models\alyx.mdl"
-}
-
-mapname "maps\d1_trainstation_05bill.bsp"
-scalesettings
-{
-  "CChoreoView" "36"
-  "ExpressionTool" "18"
-  "GestureTool" "100"
-  "RampTool" "52"
-  "SceneRampTool" "100"
-}
-fps 60
-snap off
+// Choreo version 1
+event section "p"
+{
+  time 1.824562 -1.000000
+  param "noaction"
+}
+actor "Alyx"
+{
+  channel "audio"
+  {
+    event generic "Exit Nag 3"
+    {
+      time 0.360703 4.617305
+      param "debugtext We've got to move on.  Hurry up and let's go."
+    }
+  }
+  channel "look at"
+  {
+    event face "face player"
+    {
+      time 0.185185 0.944444
+      param "!player"
+    }
+  }
+  channel "move to"
+  {
+  }
+  channel "faceTo"
+  {
+    event face "!player"
+    {
+      time 0.395868 1.338493
+      param "!player"
+    }
+  }
+  channel "Postures"
+  {
+  }
+  channel "Trigger"
+  {
+  }
+  channel "bodyges"
+  {
+  }
+  channel "Gestures"
+  {
+  }
+  channel "armpose"
+  {
+  }
+  channel "facial"
+  {
+  }
+  channel "head"
+  {
+  }
+  channel "seq"
+  {
+  }
+  faceposermodel "U:\HL2\hl2\models\alyx.mdl"
+}
+
+mapname "maps\d1_trainstation_05bill.bsp"
+scalesettings
+{
+  "CChoreoView" "36"
+  "ExpressionTool" "18"
+  "GestureTool" "100"
+  "RampTool" "52"
+  "SceneRampTool" "100"
+}
+fps 60
+snap off