cmake CPLEX examples

cnr-isti-vclab/meshlab unsupported/plugins_unsupported/external/CoMISo/CMakeLists.txt :224 

find_package (CPLEX)

plstcharles/litiv cmake/Modules/FindOpenGM.cmake :155 

find_package(CPLEX QUIET)

siconos/siconos cmake/FindCPLEX.cmake :28 

find_package(CPLEX REQUIRED)