normalize stack defines
add rtc_time function in public header
add rtc_time implementation for native
Merge pull request #267 from LudwigOrtmann/issue_223

normalize stack defines
add time delta to hwtimer
Merge pull request #249 from mehlis/time-rtc

add rtc_time function
Merge pull request #264 from LudwigOrtmann/native_hwtimer_delta

add time delta to hwtimer
Merge pull request #256 from OlegHahm/destiny_fixes

Destiny fixes
Refactor destiny.h
Add Documentation for destiny.h
Refactor destiny/in.h
Add Documentation destiny/in.h
Refactor destiny/socket.h
Add documentation for destiny/socket.h
Move msg_help to destiny
Order includes in destiny
Enforce coding conventions in destiny via astyle
Add module dependancies for destiny
Move L4 packet headers to destiny/types.h
Merge pull request #217 from authmillenon/destiny_refactor

Refactor destiny (transport layer) module