safeguard intrinsics.h include since it is only provided by msp430-gcc >= 4.6
Fix module dependencies for 802.15.4 drivers
fix signal trampoline

save and use the program counter on stack
removes race condition in trampoline
also push/pop full memory words explicitly
unclutter native_isr_entry a bit

remove heap_address - hopefully superflous, does not work in valgrind
remove stale TODO
Merge pull request #539 from LudwigOrtmann/native_signal_patches

Native signal patches
added release notes for RIOT-2014.01
add missing newlines
Merge pull request #541 from LudwigOrtmann/newline

add missing newlines
updated README to reflect the current state
Merge pull request #543 from OlegHahm/readme_update

updated README to reflect the current state
added documentation for scheduler statuses
created doxygen link to STATUS_STOPPED
Merge pull request #542 from OlegHahm/status_documentation

Status documentation
Merge pull request #532 from authmillenon/fix-module-dependencies

Fix module dependencies for 802.15.4 drivers
Merge pull request #530 from thomaseichinger/msp430-intrinsics.h-fix

safeguard intrinsics.h include in lpm_cpu.c
improve test_hwtimer usefulness

make the delays noticeable for humans
use HWTIMER_TICKS macro for platform independency
substitute folder with directory
Merge pull request #544 from LudwigOrtmann/folder2directory

substitute folder with directory
increase inter-timer delay
Merge pull request #546 from LudwigOrtmann/test_hwtimer

improve test_hwtimer usefulness