#1 X-Apple-Validator forming incorrect MD5 hash

[Aaron Conole]

The current code for X-Apple-Validation does not
correctly encode the User agent, URI, Random Number,
and Base64 decoded string correctly.

Tested against: CVS and nightly tar

Test Random: 6B5C0D73
Test URI: /search?term=311
Test UA:

Results expected: RANDOM-75C9B6E55BC3EE83859025E0E1B147E7

[Aaron Conole]

Logged In: YES
user_id=302236

Assigning to Aaron Conole as part of initial bug scrub