shell: print command if not found
shell: fixup test_shell expect scripts
you can never have enough debugging in RPL
some minor fixes and debugging
set correct transceiver stack size for debugging
fixed debugging for cc110x
net: IPv6: RPL: more debug output
rpl: debug: use DEBUGF where necessary
cpu: added low-level pwm driver impl for lpc2387
boards: added periph_conf.h for msba2 and avsextrem
drivers: some adjustments to low-level pwm driver

- adjusted doxygen and boilerplate
- changed return values for start and stop functions
board - pttu: added periph_conf.h
tests: test_bloom: fix PROJDEPS concurrency

Our buildtests build one project concurrently for multiple boards.
The current creation of the `PROJDEPS` for `test_bloom` might fail if

* board `A` notices that the dependency is missing and gets preempted,
* board `B` creates the dependency and gets preempted,
* board `A` starts the creation but gets preempted in the middle of the process,
* board `B` works with a half complete created file.

This PR creates the dependency in the individual `BINDIR`.
Merge pull request #1338 from Kijewski/test_bloom-concurrency

tests: test_bloom: fix PROJDEPS concurrency
make: s/PROJDEPS/APPDEPS/

fixes https://github.com/RIOT-OS/RIOT/issues/1284
doc: improve APPDEPS example

Addresses https://github.com/RIOT-OS/RIOT/pull/1339#discussion_r14050325
make: evaluate the Git SHA only once
Merge pull request #1339 from LudwigOrtmann/issue-1284

make: s/PROJDEPS/APPDEPS/
Merge pull request #1340 from Kijewski/evaluate-git-sha-once

make: evaluate the Git SHA only once
cc110x_ng: build cc110x_spi for all boards except chronos