This reverts commit 54a202b3.

Conflicts:
	modules/core/doc/command_line_parser.rst
	modules/core/include/opencv2/core/core.hpp
	modules/core/src/cmdparser.cpp
	modules/gpu/perf/main.cpp
	modules/gpu/test/main.cpp
	modules/ts/src/ts_perf.cpp

This reverts commit e2d9fc4d.

perf_framework: added TEST_CYCLE_MULTIRUN macros ( invokes function tested several times at each iteration )