Support functions from OpenCL 1.1 / OpenCL 1.2

This reverts commit 286244ef.

We never set it, and libdc1394 0.9.5 is obsolete anyway - 1.0 came out
in 2004.

Note that 1.0 doesn't have the do_extra_buffering parameter.

* There's no OPENCV_BINARY_DIR variable;
* No need to append CMakeFiles/CMakeTmp, as CMake does it for you;
* Output variables are unused;
* Wrong usage of CMAKE_FLAGS;
* Small quoting and style issues.

(cherry picked from commit aa96d8d0)

This version uses CMake to generate Info.plist, which should be more
reliable than the old approach.

disabled 64f IPP DFT; added IPP Gaussian filter; added IPP GetRectSubPix; added IPP BilateralFilter (temporarily disabled)

On my MacOS the output of the sphinx-build binary is the following:

Error: Insufficient arguments.

Sphinx v1.2b1
Usage: /usr/local/bin/sphinx-build [options] sourcedir outdir [filenames...]

...

I have installed sphinx, but without this change HAVE_SPHINX==0 for me, so I can't build docs.

WITH_WINRT -> ENABLE_WINRT_MODE;
Some temporary char* replaced with Ptr<char>;
Build fix for regular WIN32;
Windows Platform SDK and MSVC search added to cmake;
Warinig fixes.

Additional CMAKE flag WITH_WINRT added.

Also, removed needless check of BUILD_SHARED_LIBS in core; in that case,
only the current module's library type matters.

* removed 2.0 PTX from default parameters since it has become obsolete
* added 3.5 BIN to prevent JIT compilation for super-Kepler

Now the HAVE_* macros are set in cvconfig.h. Most of them already were there,
but were nonfunctional.

Now the HAVE_* macros are set using cvconfig.h. Previously most
of them already were there, but were always undefined. One,
HAVE_COCOA, I had to add.

This also makes the CMake code more consistent; now, WITH_* variables
are always checked in cmake/*, while HAVE_* variables are checked in
modules/highgui/CMakeLists.txt.

I've left HAVE_LIBPTHREAD as a CMake variable, since TBB's build depends on it.

Some macros in internal.hpp depended on HAVE_ALLOCA_H, but they were, in turn,
unused, so I've just deleted them all.