Updated the MSP430 hwtimer implementation, to cope with the lack of consistency
of of TI with the TimerX register names.
Added mising reference to cpu/msp430-common/include/cpu.h
so as to get the needed definition of F_RC_OSCILLATOR
Added missing definition of 'PRIu32' in some RIOT include files
to avoid a bug in mspgcc's standard library
fixed debug output for ps and vtimer
shell: refactor default shell command handling

before, we actually duplicated code for handling of shell commands
supplied to shell_init and those hardcoded by MODULE_SHELL_COMMANDS.

This patch refactors shell.c find_handler and print_help so there's
no duplicated code.
fixed byte order in reception of IEEE802.15.4 frames according to the fixed sending in f6c37b0b4fab35ab50aa9095f1c584fb74f92d0a
add lpm syscall barrier for native w/out UART
Merge pull request #325 from LudwigOrtmann/native_no-uart_syscall_barrier

add lpm syscall barrier for native w/out UART
Merge pull request #297 from OlegHahm/debug_fixes

fixed debug output for ps and vtimer
shell: dont't use malloc on each line
clean up shell
added some debug output for the network stack
Merge pull request #254 from OlegHahm/network_debug

added some debug output for the network stack
Merge pull request #236 from OlegHahm/telosb

Telosb
implement buildtest target

the target runs make for every board in boards
allow for differing RIOT* paths
include HOME in env
Merge pull request #322 from LudwigOrtmann/issue_320

implement buildtest target
fix race condition in hwtimer_spin
improve fix and comment