New INIT with exec and import implemented

[Xmister]

I had got the sources of our init a few weeks ago (thanks to gmobile), and today I've implemented the 'exec' and 'import' commands.

The sources can be found here: http://github.com/Xmister/i5700-xmister-init

A few note:

• It seems exec in imported file not working.
• For me the imported file only worked with "on boot" specified. That was maybe because I imported it within init.rc's "on init" section.
• I've written exec with a 60s timeout, so nothing can freeze the boot process forever.

A few examples:
init.rc:

.
.
.
 # /xbin (busybox) - Mount early for e2fsck
    mount squashfs /dev/bml8 /xbin ro loop
.
.
.
    exec /xbin/busybox sh -c "e2fsck -fyc /dev/stl5 > /data_check.txt"
    mount rfs /dev/stl5 /data nosuid nodev xattr,check=no
    mount ext2 /dev/stl5 /data nosuid nodev noatime nodiratime
    mount ext4 /dev/stl5 /data nosuid nodev noatime nodiratime barrier=1 data=ordered
.
.
.
   import /data/proba.rc
.
.
.

proba.rc:

on boot

  write /a.txt a