correct debian/scripts/applets

correct debian/scripts/applets

Some applets were being installed in incorrect locations. Also, the location
for powertop (/usr/bin/powertop) was not defined.
This commit fixes these issues.

The following applets have been moved to a new location (format: OLD -> NEW).
Applications marked with an asterisk (*) ship with Maemo by default.

/bin/bunzip2 -> /usr/bin/bunzip2*
/bin/bzcat -> /usr/bin/bzcat*
/bin/bzip2 -> /usr/bin/bzip2*
/bin/popmaildir -> /usr/bin/popmaildir
/sbin/crond -> /usr/sbin/crond
/usr/bin/adjtimex -> /sbin/adjtimex
/usr/bin/brctl -> /usr/sbin/brctl
/usr/bin/ether-wake -> /usr/sbin/ether-wake
/usr/bin/fdformat -> /usr/sbin/fdformat
/usr/bin/freeramdisk -> /sbin/freeramdisk
/usr/bin/lpd -> /usr/sbin/lpd
/usr/bin/readahead -> /sbin/readahead
/usr/bin/rtcwake -> /usr/sbin/rtcwake
/usr/bin/udhcpc -> /sbin/udhcpc*
/usr/sbin/hdparm -> /sbin/hdparm
/usr/sbin/sha256sum -> /usr/bin/sha256sum
/usr/sbin/sha512sum -> /usr/bin/sha512sum

I have no idea how sha256sum and sha512sum ended up in /usr/sbin...