* inlined rol everywhere
* variable initialization cleanup
* converted to RFC's "method 2" (cleaner, about the same speed)
* sha1() now returns array of 5 ints, instead of doing the text/hex conversion
* add password auto-clearing after 60s
* display blank password if either site or password is blank
* switch to sha1
* add license info to passy.js
* created passytiny.js and passytiny.html (which includes passytiny.js already)