move usage_compressed.h generation into applets/

applets/usage_compressed

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+target="$1"
+loc="$2"
+
+test "$target" || exit 1
+test "$loc" || loc=.
+test -x "$loc/usage" || exit 1
+test "$SED" || SED=sed
+
+sz=`"$loc/usage" | wc -c` || exit 1
+
+exec >"$target"
+
+echo 'static const char packed_usage[] = '
+"$loc/usage" | bzip2 -1 | od -v -t x1 \
+| $SED -e 's/^[^ ]*//' -e 's/ \(..\)/\\x\1/g' -e 's/^\(.*\)$/"\1"/'
+echo ';'
+echo '#define SIZEOF_usage_messages' `expr 0 + $sz`