board/pca1000x: added/fixed dist scripts

- pca10000: added author to debug.sh
- pca10005: added debug and reset scripts
- pca10005: fixed flash script
- pca10005: adjusted env vars in Makefile.include
unittests: make: Fix unittests for branch changes

Changing between branches in git typically leaves directories empty and
does not remove them. If you have different unittests in different
branches this leads to an error in building them, since the current
configuration expects a Makefile in all `tests-*` directory. This change
configures Make to search for a Makefile in `tests-*` rather than just
assuming that there is one.
rpl: mute RPL

Removes all but one occurrence of printf and puts within routing (the
remaining puts is called from a debug function.
add backspace functionality in shell
lint: lpc1768/msp430: remove arith ops on void ptrs
cpu: arm/cortex-mX/atmega: use uintptr_t for sp cast
cpu: multiple: change size_t to ptrdiff_t for_sbrk_r
Merge pull request #1662 from N8Fear/void_ptr_arith

lint: lpc1768/msp430: remove arith ops on void ptrs
Merge pull request #1664 from N8Fear/unsignedLessThanZero

lint: _sbrk_r: change parameter type from size_t to ptrdiff_t
examples/rpl_udp: fix spelling, README.md
Merge pull request #1666 from LudwigOrtmann/1660-fixup

examples/rpl_udp: fix spelling, README.md
doc: tailor CMSIS doxygen for license checker

Remove '@par' within the license header to allow the existing regular
expression to match it.
iot-lab_M3: fixing term make target
Merge pull request #1672 from thomaseichinger/iot-lab_fix_term

boards/iot-lab_M3: fixing term make target
drivers/at86rf231: handle channel out of range more conveniently
Merge pull request #1675 from thomaseichinger/rf231_channel_setting

drivers/at86rf231: handle channel out of range more conveniently
Merge pull request #1667 from LudwigOrtmann/cmsis-header

doc: tailor CMSIS doxygen for license checker
boards: redbee: add missing semicolon
cpu: change __ASM to asm (cppcheck uninitvar error)
Merge pull request #1665 from N8Fear/uninitvar

lint: fix warnings because of uninitialized variables