[rtmpdump] CRYPTO needs to be defined in r426

[Howard Chu]

Stef wrote:
> Hi Howard.
>
> I think you need to change line #12 in the Makefile from"
>
> DEF=-DRTMPDUMP_VERSION=\"$(VERSION)\"
>
> to
>
> DEF=-DRTMPDUMP_VERSION=\"$(VERSION)\" -DCRYPTO
>
> If you compile it as-is, you won't get the SWF verifying bits (well, not
> in MingW anyway).

Yeah, that last round of CRYPTO patches strike me as a mistake, I will 
probably revert them unless I can think of a neater solution.