Added frombinary modifier.

tests/testmodifiers.jet

@@ -1,10 +1,10 @@
 #!../jet-2.0
 <jet>
- <set name="tester1" value="this is a test of the hex conversion." />
+ <set name="tester1" value="this is a test \"of the hex\" conversion." />
  <set name="tester2" value="$[tester1;tohex]" />
 1) $[tester1;tobinary]
 2) $[tester1;tohex]
 3) $[tester2;fromhex]
-4) $[tester1]
+4) $[tester1;frombinary]
 5) $[tester2]
 </jet>