Check if the superproject has already enabled C++11 before enabling
it in CMakeLists.txt.
Added utility file atomic.hpp to select the correct atomics header
to work around issues with ancient GCC 4.4.
In order to avoid excessive build failures because of compiler
warnings, added WSREP_LIB_MAINTAINER_MODE cmake option which
must be enabled explicity in order to enable -Werror build flag.
Travis:
* Don't install all g++ versions on all build targets.
* Install addons per target to have finer control on what is needed
* Use WSREP_STRICT_BUILD_FLAGS on other targets than GCC 4.8
cmake:
* Fixed CMakeLists.txt to check only boost libraries which are
actually needed
In order to make build successful on wider number of platforms,
removed -Weffc++ from default build options. Added a new cmake
option WSREP_LIB_STRICT_BUILD_FLAGS to enable it.
with superproject definitions.
Avoid using client_service::do_2pc() in before_commit() to
determine if 2pc is actually happening, will use transaction
states to deduce that. client_service::do_2pc() should be deprecated.
Fixed a compiler warning in db_high_priority_service.cpp.
Depending on the DBMS client session allocation strategy the
client id may or may not be available when the client_session
is constructed, therefore there should be a method to assign
an id after construction. Close/cleanup methods were added to
clean up open transactions appropriately.
