Conditionally removes usage of deprecated features

-add macros to test for C++ version and features
to catch_compiler_capabilities.hpp
- replaces dynamic exception specifications (deprecated)
with noexcept in C++ Version >= 11
- defines defaulted copy constructor/move constructors/assignment
in C++ Version >= 11 since their implicit generation is deprecated
under some circumstances.
- fixes #259
Merge branch 'master' of https://github.com/gnzlbg/Catch

# By gnzlbg
# Via gnzlbg
* 'master' of https://github.com/gnzlbg/Catch:
  Conditionally removes usage of deprecated features

Conflicts (resolved):
	include/internal/catch_common.h
	include/internal/catch_section.hpp