Please find the patches attached herewith for adding 3 new commands -

1. freeramdisk - If we unmount or detach the RAM disk based file system the Linux Kernel
   will not free the allocated memory associated with the RAM device. This can be useful if
   one wants to mount this device again:  All data will be preserved.
   If we need to free the memory back to the Kernel, one can use the command: "toybox freeramdisk <RAM device>".

2. openvt - Successfully opens a new virtual terminal as mentioned with -c option
        otherwise search and open next available VT.
with -s option it switches to new VT
with -s -w option, it switch back successfully to originating VT.

3. deallocvt - Deallocate specified virtual teminal.
   if no virtual terminal is specified, it deallocates all unused VT.

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