Extract IMPORTED targets from INTERFACE_LINK_LIBRARIES for try_compile.
Merge topic 'find-IMPORTED-targets-for-try_compile' into next

668054f Extract IMPORTED targets from INTERFACE_LINK_LIBRARIES for try_compile.
Add missing files.
Merge topic 'find-IMPORTED-targets-for-try_compile' into next

46a9173 Add missing files.
KWStyle: Correct lines that are too long.
Merge topic 'vs2013_toolset_14369' into next

1a0f111 KWStyle: Correct lines that are too long.
VS: Correct trailing space inside toolset name.
Merge topic 'vs2013_toolset_14369' into next

e6730f0 VS: Correct trailing space inside toolset name.
CXXFeatures: fix deleted_functions fail compile test

If aggressive optimizations are used the struct could be entirely optimized
away so it's deleted function will cause no error. Make sure the struct is
indeed referenced.
Merge topic 'cxx11' into next

bf149bd CXXFeatures: fix deleted_functions fail compile test