[rtmpdump] MSVC Support (static lib w/CRYPTO)

[Howard Chu]

Stream Alerts Support wrote:
> Howard Chu wrote:
>>  The current code builds painlessly using MinGW; I used the MSYS environment to
>>  put everything together. I haven't tried building XBMC on Win32 though. Have
>>  no idea what the build dependencies are like for that...
>
> And with just a few simple tweaks to the makefile, I've built MSVC compatible
> shared and static libraries under MinGW and used them in my project without
> any problems. I'll see if I can create a makefile patch and submit it for ya'll.

Thanks. I'd prefer not to carry any Visual Studio project files; they will 
just go out of date whenever we do anything that requires a Makefile update.