- disable gcov coverage recording
Gcov is a development tool, it slows down execution and creates
coverage data that is not useful to users of this library.

this fixes warnings when using eq mysql-workbench as normal user (root would actually write those files!):
profiling:/home/abuild:Cannot create directory
profiling:/home/abuild/rpmbuild/BUILD/mysql-connector-c++-1.1.2/driver/CMakeFiles/mysqlcppconn.dir/mysql_metadata.cpp.gcda:Skip

please forward to Factory and maybe even released versions of openSUSE