- Many fixes to sourcing, now will always resolve to base dir.

- All scripts are again `sh` compatible.
- Binbox overhaul, symlinks finally work just like `busybox`.
- Error checking to some files like `sw` and `own`.
TODO: Make it pretty and make `short` already.

sw

@@ -1,6 +1,9 @@
 #!/bin/sh
 # It just swaps two files
 
+export DAISY_INTERNAL=1
+. $(dirname $(realpath $0))/daisy.source
+
 FILE1=$1
 FILE2=$2
 
@@ -9,17 +12,21 @@ function helpFn()
   ERROR=$?
   if [[ $ERROR -gt 0 ]];
   then
-    echo "$BINSELF error ($ERROR): "
-    perl -E 'say $!=shift' $ERROR
+    ERROR_TEXT=$(perl -E 'say $!=shift' $ERROR)
+    echo "$DAISY_BIN error ($ERROR): $ERROR_TEXT"
   fi
-  echo "Usage: $BINSELF <file1> <file2>"
+  echo "Usage: $DAISY_BIN <file1> <file2>"
   echo Swap two files in a filesystem.
 	exit $ERROR
 }
 
-if [[ $@ == *"--help"* ]];
+if [[ $@ == *"--help"*  ]];
 then
 	helpFn
+elif [[ $@ == '' ]];
+then
+	echo "No arguments specified."
+	helpFn
 fi
 
 # We set a trap here, together with 'set -e' above,