Import zerocopy buffer implementation
delete temp file
fix git ignore file
fix git ignore file

Conflicts:
	.gitignore
	CMakeLists.txt
	tests/CMakeLists.txt
Fix gitignore
Minor parsing rewrite, interim version
Code formatting.
Cleanup code from ifdef 0 trash.

Some of ifdef 0 parts are still exist - not shure that these ones
are useless.
Remove unused chunk.h
Change basic_fragment and basic_raii_fragment for better structure

- iterators' providers has been moved to basic_fragment
- removed unnesessary basic_raii_fragment::real_data_
- removed ugly "mutable" attribute which is not needed
+ fixed namespace detail closed brace
Remove basic_fragment::buf() function which is not needed.
Add virtual destructor for basic_fragment which is lack
Fixed CMakeFiles
Merge branch 'zerocopy' into config-parser
Sync to current version
Merge branch 'config-parser'