Remove buffer_size()
Remove basic_segment::get_part wich is not used.
Cleanup iterators definitions in segment class
Cosmetic changes for segment class.
Rename iterator class attributes
Use boost::allocate_shared in zerocopy streambuf
Add Google test support for testing

"check" target for test run, dummy test added.
module logger
add missed header
add limiters repository
change architecture of limiters class, add composite_limiter factor
add polimorfic key to limiters_repository
add default constructor for composite_limiter
refactoring
Merge branch 'module_logger'
fix coompilation error
remplace alias yamail to namespace yamail (for compatibility)
Merge branch 'zerocopy'
Clang compatibility

Fixed misc clang compatibility issues.
add syslog_native (boost >= 1.46)