examples/rpl_udp: use defaulttransceiver
Make: fix linebreaks in buildtest
Make: do not spam error messages on shallow clones

> `--always`: Show uniquely abbreviated commit object as fallback.
Make: exterminate 'clean' buildtarget

Closes #993.

We do not need to descend into the modules to know what to do on
`make clean BOARD=blub`. We can just invoke `rm -rf bin/blub`.

This PR only keeps the descending into the USEPKGs, since they might
want to delete cached/downloaded/extracted data.
Initial import of low-level timer driver interface

Fixed spelling

drivers: adjustments to low-level timer driver IF

drivers: added [in|out] to @param documentation

drivers: fixed doxygen for tim_t typedef
Merge pull request #614 from haukepetersen/periph_driver_timer

Initial import of low-level timer driver interface
drivers: Initial import of low-level UART driver interface

Fixed spelling

drivers: remodeled low-level uart driver interface

- added blocking mode of operation
- added UNDEFINED device for compatibility
- changed baudrate type to uint32_t

drivers: added [in|out] to param documentation
Merge pull request #613 from haukepetersen/periph_driver_uart

Initial import of low-level UART driver interface
drivers: Initial import of low-level ADC driver interface

Fixed tons of spelling errors

Fixed typo in ADC_NUMOF macro

drivers: adjustment to low-level adc drvier IF

drivers: added [in|out] to doxygen @param comments
Merge pull request #616 from haukepetersen/periph_driver_adc

Initial import of low-level ADC driver interface
Import embunit sources
Adapt embunit for RIOT
Create unittest application
tests: added README.md for test_float
wsn430-v1_4b: don't always link cc2420
Merge pull request #998 from OlegHahm/test_float_readme

tests: added README.md for test_float
Merge pull request #991 from Kijewski/fix-buildtest-newlines

Make: fix linebreaks in buildtest
Merge pull request #381 from authmillenon/unittests

Unittests via embUnit
Add the ability to send a message to the current thread's message queue
(without raising an error)
ccnl: LRU is the replacement strategy, rename variable to express this