Atomic operations on shared_ptr<> is not portable

It ends up using a lock on some implementations anyway. We might need
to revisit this if it’s a bottleneck.
Building with GCC on Linux
Build instructions for Linux
Merge branch '1.0' of https://github.com/datastax/cpp-driver into 1.0
Typo 'Ubuntu' to 'Linux'
Fixed Windows instructions list
Fixed Windows instructions list again
Fixed 'gcc' to 'g++'
GCC and Clang compatibility
Merge branch '1.0' of https://github.com/datastax/cpp-driver into 1.0
Fixed and added batch tests
Fixed issue where connect hangs when no hosts

Also added configuration options
Fixed options issues
Config tests
Minor sytax changes to get it to build with gcc 4.6
Added larger timeout to the integration tests
More config tests
Merge branch '1.0' of https://github.com/datastax/cpp-driver into 1.0

Conflicts:
	include/cassandra.h