Some fixes for incorrectly documented parameters identified by rst_parser.py (Bug #1205)
fixed build with CUDA 5.5 on arm platforms
moved iOS part to platforms folder
Pass the HAVE_QT* flags through the config header, like all others.

I don't know why it didn't work for the original author, but it definitely
works now.
Extended the CPU/GPU selection mechanism in performance tests.

Now it allows choosing between arbitrary implementation variants.
Made perf tests record module name, selected implementation and number of threads.
Added an option to print available implementation variants.
Disabled the cuda variant when CUDA is not available.
Changed the impls argument to be an array name.

Turns out, you can't use preprocessor directives inside macro arguments.
Who'd have thought?
Made xls-report.py use global properties in XML files.

Now it can determine, without looking at the file name, both the module
name and the configuration name (the latter with a little help from the
configuration file).
Made Collector render property sets as dicts instead of tuples of pairs.
Wrote relevant docs.
Replaced the semi-public CV_PARALLEL_FRAMEWORK macro with a function.

That way, core/internal.hpp doesn't have to depend on cvconfig.h, which we
don't ship.
Update Info.plist.in
Merge pull request #1029 from SpecLad:have-qt-config
Merge pull request #1030 from SpecLad:ts-impl-variants
add "-c" for cpu ocl mode in perf tests
fix stereobm crash on some cpu ocl
Merge pull request #1021 from alekcac:platforms
Merge pull request #1035 from SpecLad:cv-concurrency