rerelease airbut1.wav f_modified

[namtsui]

fix checksum and set lastid.

With the previous changes in #790 f_modified still reported airbut1.wav. I had two mistakes. I used the checksum of the original airbut1.wav instead of the rerelease. I also did not set lastid.

This time I was able to actually test and f_modified passes on dm2 and e1m2.

[namtsui]

$ sha1_quake original/sound/buttons/airbut1.wav
original/sound/buttons/airbut1.wav: {0x47d5141e, 0xc925e8eb, 0x26e5583c, 0xc8dfd021, 0x226792ef}

$ sha1_quake remastered/sound/buttons/airbut1.wav
remastered/sound/buttons/airbut1.wav: {0x81911593, 0x3e85656b, 0x7a9475d0, 0x87de29a0, 0x157d3ef9}

#!/bin/sh
# ezquake fmod.c stores SHA1 checksums in little-endian
#
# usage:
# $ for f in *.wav; do sha1_quake $f; done 
# armor1.wav: {0x44488db0, 0xef0b0a1d, 0x3acda8b4, 0x3d87b467, 0xe4dd4fcc}

little_endian() {
        echo $1 | sed 's/\(..\)\(..\)\(..\)\(..\)/\4\3\2\1/'
}

HASH=$(sha1 $1 | awk '{ print $4 }')
NUM1=$(echo $HASH | sed 's/\(........\).*/\1/')
NUM2=$(echo $HASH | sed 's/........\(........\).*/\1/')
NUM3=$(echo $HASH | sed 's/................\(........\).*/\1/')
NUM4=$(echo $HASH | sed 's/........................\(........\).*/\1/')
NUM5=$(echo $HASH | sed 's/................................\(........\).*/\1/')
NUM1=$(little_endian $NUM1)
NUM2=$(little_endian $NUM2)
NUM3=$(little_endian $NUM3)
NUM4=$(little_endian $NUM4)
NUM5=$(little_endian $NUM5)
echo "$1: {0x$NUM1, 0x$NUM2, 0x$NUM3, 0x$NUM4, 0x$NUM5}"