syntax of cmake "get_filename_component" changed after version 2.8.11

for cmake version < 2.8.11
  get_filename_component(<VAR> <FileName> PATH [CACHE])

for cmake version >= 2.8.11
  get_filename_component(<VAR> <FileName> DIRECTORY [CACHE])

Update OpenCVConfig.cmake

Update OpenCVConfig.cmake.in

fixed incorrect behaviour of move semantics for cv::Ptr, cv::Mat, cv::UMat in case when rvalue-reference references to *this.

responses must be float, else we trigger an assertion in line 150

add a cast to double, to make vs compilers happy

typo correction

This reverts part of commit 0db10a30

cosmetic changes to fix this warning.
real bugs not found