ENH: for some reasons there was never a FindCVS module?

Modules/FindCVS.cmake

@@ -0,0 +1,56 @@
+# The module defines the following variables:
+#   CVS_EXECUTABLE - path to cvs command line client
+#   CVS_FOUND - true if the command line client was found
+# Example usage:
+#   find_package(CVS)
+#   if(CVS_FOUND)
+#     message("CVS found: ${CVS_EXECUTABLE}")
+#   endif(CVS_FOUND)
+
+# CVSNT
+
+get_filename_component(
+  CVSNT_TypeLib_Win32
+  "[HKEY_CLASSES_ROOT\\TypeLib\\{2BDF7A65-0BFE-4B1A-9205-9AB900C7D0DA}\\1.0\\0\\win32]" 
+  PATH)
+
+get_filename_component(
+  CVSNT_Services_EventMessagePath
+  "[HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Services\\Eventlog\\Application\\cvsnt;EventMessageFile]" 
+  PATH)
+
+# WinCVS (in case CVSNT was installed in the same directory)
+
+get_filename_component(
+  WinCVS_Folder_Command
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\Folder\\shell\\wincvs\\command]" 
+  PATH)
+
+# TortoiseCVS (in case CVSNT was installed in the same directory)
+
+get_filename_component(
+  TortoiseCVS_Folder_Command
+  "[HKEY_CLASSES_ROOT\\CVS\\shell\\open\\command]" 
+  PATH)
+
+get_filename_component(
+  TortoiseCVS_DefaultIcon
+  "[HKEY_CLASSES_ROOT\\CVS\\DefaultIcon]" 
+  PATH)
+
+find_program(CVS_EXECUTABLE cvs
+  ${TortoiseCVS_DefaultIcon}
+  ${TortoiseCVS_Folder_Command}
+  ${WinCVS_Folder_Command}
+  ${CVSNT_Services_EventMessagePath}
+  ${CVSNT_TypeLib_Win32}
+  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\CVS\\Pserver;InstallPath2]"
+  DOC "CVS command line client"
+  )
+mark_as_advanced(CVS_EXECUTABLE)
+
+# Handle the QUIETLY and REQUIRED arguments and set CVS_FOUND to TRUE if 
+# all listed variables are TRUE
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(CVS DEFAULT_MSG CVS_EXECUTABLE)