cmake HAS_WT_DBO_MYSQL examples

sandialabs/InterSpec CMakeLists.txt :931 

find_file( HAS_WT_DBO_MYSQL "MySQL" PATHS "${Wt_INCLUDE_DIR}/Wt/Dbo/backend/" NO_DEFAULT_PATH )

sandialabs/InterSpec CMakeLists.txt :944 

endif(USE_MYSQL_DB AND NOT HAS_WT_DBO_MYSQL)