prefixing application object files to avoid dups
changed duplicate file name for wsn430 uart0.c
use subfolder instead of file name prefix
Merge pull request #494 from OlegHahm/uniq_obj_file_names

prefixing application object files to avoid dups
Auto init destiny
Start POSIX net [pnet] module
Implement file descriptor table

Needed for pnet
Implementation of close()
Define stdin, stdout and stderr
Wrap RIOT socket API
Add auxilary headers
Add pnet tests
Add libcoap as BSD ports-like package