+ Keyboard unit overhaul

     + Shift+arrow keys now working in xterm
     + Keyboard restored when vt-switching away from application on Linux
       console
     + Escape key remapped on Linux console so it works instantly.
     + Try to use Linux console more aggressively
     + Linux specific code now only executed on Linux terminals and not
       on xterm, FreeBSD etc.

git-svn-id: trunk@2383 -

rtl/inc/keyscan.inc

@@ -1,7 +1,8 @@
 { list of all dos scancode for key giving 0 as char }
 Const
    kbNoKey       = $00;
-   kbAltEsc      = $01;
+   kbAltEsc      = $01;  {Alt+Esc = scancode 01, ascii code 0.}
+   kbEsc         = $01;  {Esc     = scancode 01, ascii code 27.}
    kbAltSpace    = $02;
    kbCtrlIns     = $04;
    kbShiftIns    = $05;