move time.h/time.cpp to misc/
1. alioss.cpp: currently not used module, deleted.
add .gitignore for vs13/alioss/
Move commonly used classes into ossmeta.namespace
rename body_stream to str_body_ostream && put it into http.namespace
socket: add ipv4 endpoint class
add module: osserr & ossexcept
add module: bucket operation, init commit
ossmeta: add class content for list bucket objects.