fix wsn430-v1_4 Makefiles
move Makefile.dep include

boards modify USEMODULE which can lead to additional dependencies.
including Makefile.dep last enables it to resolve all dependencies.
fix to use only transceiver_pid from transceiver.c
aligned comment on external thread_pid
fix made transceiver_pid extern for at86rf231
fix made transceiver_pid extern for cc2420
include cc110x.h instead of deprecated interface.h
Merge pull request #655 from OlegHahm/cc110x_header

include cc110x.h instead of deprecated interface.h
Merge pull request #652 from BytesGalore/fix_transceiver_pid_for_at86rf231

fix to use only transceiver_pid from transceiver.c (at86rf231)
Merge pull request #653 from BytesGalore/fix_transceiver_pid_for_cc2420

fix to use only transceiver_pid from transceiver.c (cc2420)
Merge pull request #646 from BytesGalore/fix_tranceiver_pid_for_cc110x_ng

fix to use only transceiver_pid from transceiver.c
Merge pull request #661 from LudwigOrtmann/Makefile_dep

move Makefile.dep include
Merge pull request #657 from LudwigOrtmann/wsn430-v1_4_Makefiles

fix wsn430-v1_4 Makefiles
remove trailing whitespace and newlines
Merge pull request #673 from LudwigOrtmann/whitespace

remove all trailing blank lines and all trailing whitespace
posix: add pthread wrapper
added pthread test case
Use reaper thread in pthread_create