added NORETURNs to functions that should not return
and added `UNREACHABLE();` to hint the compiler unreachable lines

added right signature for first parameter of `thread_stack_init()`
added `UNREACHABLE();` macro to `cpu/lpc1768/atom.c` and `cpu/msp430-common/cpu.c`
Add process indicator to compile_test.py
Asks Git to ignore IDE-related (TI CCS) files
Merge pull request #1079 from BytesGalore/add_NORETURNs

core: and cpu: Added NORETURN to functions that should not return
Merge pull request #1085 from Kijewski/compile_test-process-indicator

Add process indicator to compile_test.py
boards/z1: initial import
Merge pull request #893 from rousselk/z1-port

Zolertia Z1 port for RIOT OS
make: remove clutter

Remove some outdated example code, and simplify output folder creation.
make: parallelize creation of board and base code
 make: add `BOARD_INSUFFICIENT_RAM` blacklisting

Currently most blacklistings for examples and tests are done because the
board provides too little RAM or ROM. Besides of the actual linking all
the compiling should nevertheless work just fine.

This PR adds the variable `BOARD_INSUFFICIENT_RAM` to tell the
`buildtest` to compile the code for a board, but omit the linking step.
Use `BOARD_INSUFFICIENT_RAM` in examples and tests