Fix unused parameter warning (fix #9106)
Do not treat long long warnings as errors in lexical_cast + containers tests (fixes #9061)
Make a separate folder for lexical_casts examples, use those examples in documenation and assure that they successfully build and run (refs #9046)
Minor update of lexical cast before fixing mingw issues (refs #9046)
lexical_cast.hpp improvements: fix bug with floats conversions and improve docs (refs #9046)
Fix generic_stringize example compilation on Darvin (refs #9046)
Remove obsolete MSVC check from pragma guard

 git grep -h -B1 "^#\s*pragma once" | grep -v pragma | sort | uniq

is now clean.
cast: Remove obsolete MSVC version check.
lexical_cast: Remove obsolete GCC version check.