include "cpu.h" for MSP430 platforms in fd.h
changed condition in fd.c to check for MCU instead of checking for the board
removed own implementation of errno headers
making socket.h MSP430 ready
Merge branch 'fix_includes_for_msp430' of github.com:OlegHahm/RIOT into fix_includes_for_msp430
removing unsupported board olimix_lpc2148
moved pllfeed inline function to header

Also removed useless copyright header.
fixed support for pttu board
removed unnecessary includes in RIOTBASE/Makefile
added paragraph about stack sizes and fixed formatting
Merge pull request #521 from OlegHahm/fix_includes_for_msp430

Fix includes for msp430
added docclean target and replaced make calls by variables
fixes bug in telosb board.h introduced by PR #459
Merge pull request #528 from OlegHahm/fix_make_doc

Fixing 'make doc'
Merge pull request #524 from OlegHahm/board_cleanup

Board cleanup
Merge pull request #537 from thomaseichinger/telosb-fix-cpu-speed

fixes bug in telosb board.h introduced by PR #459
updated INCLUDES part for the dist Makefile
Merge pull request #538 from OlegHahm/dist_Makefile_update

updated INCLUDES part for the dist Makefile
fix signal trampoline

save and use the program counter on stack
removes race condition in trampoline
also push/pop full memory words explicitly
unclutter native_isr_entry a bit

remove heap_address - hopefully superflous, does not work in valgrind
remove stale TODO