Bug#756480: no need for *.cmake

[Mathieu Malaterre]

Control: tags -1 patch

Since package maintainer decided not to use the cmake based build
system, I do not see the need to install pseudo *.cmake files ?

ITK should simply use a dummy find_package file (not tested), eg:

$ cat FindDoubleConversion.cmake
find_path(DC_INCLUDE_DIR double-conversion.h)
find_library(DC_LIBRARY NAMES double-conversion)

HTH