* Fixes for:

     RT #95985 - Confusing length error messages
     Corrected the incorrect text in the error messages, most of them were just referring to "nonce".  I'm also a bit more specific wrt to what key i'm talking about.  This should just be a cosmetic fix.

     RT #95987 - crypto_box() adds zero padding
     Got rid of the nulls prefixed on the ciphertext as it comes out of crypto_box() before handing it over to the perl wrapper.  This should just be a cosmetic fix.

 * Incremented version number to 0.05