on the build farm.  This, at least, gets us through the openssl->
libcurl->viewer dependency chain.

Fix llmediadataclient test to include new dep on llprimitive and fix bogus boost lib refs in llprimitive cmake def

OPEN-173 FIX FMODEx Music stutters once every few seconds (OSS patch via Latif Khalifa & Siana Gearz) - additional fix. Team City gave me the wrong MD5 for 3p-package

OPEN-173 FIX FMODEx Music stutters once every few seconds (OSS patch via Latif Khalifa & Siana Gearz)

In autobuild.xml, specify today's build of the Boost package that includes the
Boost.Context library, and whose boost::dcoroutines library uses Boost.Context
exclusively instead of its previous context-switching underpinnings (source of
the ucontext.h dependency).
Add BOOST_CONTEXT_LIBRARY to Boost.cmake and Copy3rdPartyLibs.cmake. Link it
with the viewer and with the lllogin.cpp test executable.
Track new Boost package convention that our (early, unofficial) Boost.Coroutine
library is now accessed as boost/dcoroutine/etc.h and boost::dcoroutines::etc.
Remove #include <boost/coroutine/coroutine.hpp> from
llviewerprecompiledheaders.h and lllogin.cpp: old rule that Boost.Coroutine
header must be #included before anything else that might use ucontext.h is
gone now that we no longer depend on ucontext.h. In fact remove
-D_XOPEN_SOURCE in 00-Common.cmake because that was inserted specifically to
work around a known problem with the ucontext.h facilities.

Point autobuild at newer fmodex builds and fix warning being treated as error in llaudioengine_fmodex.cpp