Passwords ending with punctuation/special characters can fail to validate

[Jason Boyer]

Presumably due to various vendor bugs, SIPServer trims anything other than A-Za-z0-9 from the end of messages. This can cause problems for the patron status message (63) if checksums are turned off, the patron password is the final field of the message, AND the password ends in any non-alphanumeric character. It's easy enough to change this cleanup step (Sip.pm line 183) but I wanted to see if anyone knows of/remembers any specific reasons that it needs to be so strict. I would think that it could just clean off extra |'s and non-printing control characters.