Minimal supported JDK level

[Niklas Gustavsson]

Hi all,

do you have any opinion regarding what's the minimal JDK level that 
FtpServer should support? Right now we don't compile on 1.3, but do 
compile on 1.4. The reason for not compiling on 1.3 is missing JSSE and 
XML libs (these can be added at the JDK level) and a couple of calls to 
Calendar.setTimeInMillis().

Personally I don't have a strong opinion beyond that it would be nice to 
support 1.3+extlibs if we need not to compromise with functionality.

/niklas