[MacPorts] #26926: new Portfile for tclap

[Anders F Björklund]

Ryan Schmidt wrote:

>> Are md5 checksums deprecated?
>
> They are to me, though we haven't made an official statement about  
> that.

Just like crc32, the md5 checksums are useful for a "quick check"...

They are just deprecated for "security" or "validation", use SHA too.

Should move from sha1 to sha256 though. Like for next release or so ?

--anders