Remove deprecated 'autoscr' command/variables

The more standard 'source' command provides identical functionality to
the autoscr command.

Environment variable names/values on the MVBC_P, MVBML7, kmeter1,
mgcoge, and km8xx boards are updated to no longer refernce 'autoscr'.

The 'autoscript' and 'autoscript_uname' environment variables are
also removed.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Andre Schwarz <andre.schwarz@matrix-vision.de>
Acked-by: Heiko Schocher <hs@denx.de>
diff --git a/board/matrix_vision/mvblm7/mvblm7_autoscript b/board/matrix_vision/mvblm7/mvblm7_autoscript
index 6f9357f..dc385fd 100644
--- a/board/matrix_vision/mvblm7/mvblm7_autoscript
+++ b/board/matrix_vision/mvblm7/mvblm7_autoscript
@@ -21,7 +21,7 @@
 setenv set_static_gw setenv gatewayip \${static_gateway}
 setenv set_ip setenv ip \${ipaddr}::\${gatewayip}:\${netmask}
 setenv ramparam setenv bootargs root=/dev/ram0 ro rootfstype=squashfs
-if test ${autoscr_boot} != no;
+if test ${autoscript_boot} != no;
 then
   if test ${netboot} = yes;
   then
@@ -39,5 +39,5 @@
   echo "=== bootfromflash ==="
   run cpdtb rundtb bootfromflash
 else
-  echo "=== boot stopped with autoscr_boot no ==="
+  echo "=== boot stopped with autoscript_boot no ==="
 fi