Finds the Concurrent Versions System (CVS).
This module defines the following variables:
CVS_FOUNDTrue if the command-line client was found.
The following cache variables may also be set:
CVS_EXECUTABLEPath to cvs command-line client.
Finding CVS and executing it in a process:
find_package(CVS)
if(CVS_FOUND)
execute_process(COMMAND ${CVS_EXECUTABLE} --help)
endif()