Startup improvements

- Delay loading resources until they are used
- Delay creating vi mode key handler tables
- Remove format.ps1xml file

Author: lzybkr

MakeRelease.ps1

@@ -24,7 +24,6 @@ $files = @('PSReadline\Changes.txt',
            'PSReadline\SamplePSReadlineProfile.ps1',
            'PSReadline\PSReadline.psd1',
            'PSReadline\PSReadline.psm1',
-           'PSReadline\PSReadline.format.ps1xml',
            'PSReadline\bin\Release\Microsoft.PowerShell.PSReadline.dll')
 
 foreach ($file in $files)

PSReadLine/KeyBindings.cs

@@ -64,7 +64,17 @@ class KeyHandler
             // (e.g. as a repeat count) or a string.  Most actions will ignore this argument.
             public Action<ConsoleKeyInfo?, object> Action;
             public string BriefDescription;
-            public string LongDescription;
+            public string LongDescription
+            {
+                get
+                {
+                    return _longDescription ??
+                           (_longDescription =
+                               PSReadLineResources.ResourceManager.GetString(BriefDescription + "Description"));
+                }
+                set { _longDescription = value; }
+            }
+            private string _longDescription;
             public ScriptBlock ScriptBlock;
         }
 
@@ -83,9 +93,6 @@ public int GetHashCode(ConsoleKeyInfo obj)
 
         static KeyHandler MakeKeyHandler(Action<ConsoleKeyInfo?, object> action, string briefDescription, string longDescription = null, ScriptBlock scriptBlock = null)
         {
-            if (string.IsNullOrWhiteSpace(longDescription))
-                longDescription = PSReadLineResources.ResourceManager.GetString(briefDescription + "Description");
-
             return new KeyHandler
             {
                 Action = action,