The test environment is now checked to contain all executables needed for
testing before tests are built. They can be overridden by defining the
relevant HAVE_X variables (currently only HAVE_MYSQLTEST and HAVE_PHP are
defined).
The CDC connector was moved to its own repository and some changes to its
interface were made. Updated build scripts, deleted old connector and
fixed code to use new interfaces.
The test suite now compiles Jansson instead of letting the CDC connector
do it. This way the connector can be used as a very simple static library
with a dependency on the Jansson library.
