Clean up test_irq (fix #943)
redbee-econotag: fix maca

I suspect that the transceiver will still not work as there are many
many warnings, but at least it builds now.

closes: #676
fix setsvar typo
Merge pull request #943 from Kijewski/issue-943

Clean up test_irq
native: add help option

Closes: #840
ccnl: find bogus looping content
native/make: set all binutils with ?= instead of =
native: update support for FreeBSD

works with FreeBSD 10.0 amd64/i386

fixes: #505
native: add tapsetup-freebsd.sh
Merge pull request #1035 from LudwigOrtmann/issue_840

native: add help option
shell: Add doxygen

Closes #577.
Merge pull request #1036 from mehlis/ccnl-looping-content

ccnl: find bogus looping content
native/make: add missing target
Merge pull request #1037 from Kijewski/issue-577

shell: Add doxygen
Merge pull request #1042 from LudwigOrtmann/native_make-all-debug-target

native/make: add missing target
tests: fix test_hwtimer_spin

Actually test hwtimer_spin, not hwtimer_arch*

`hwtimer_wait` calls `hwtimer_spin` only for delays `<= 6`, that's why a
pure test_hwtimer_spin test should not pass values `>6`.
Also decrement delay in steps of 1.
tests: add test_hwtimer_wait

It contains the old test functionality of test_hwtimer_spin.
Merge pull request #1044 from LudwigOrtmann/issue_715

tests: fix test_hwtimer_spin
make: comprehensive list of the boards' filesizes
make: add maketarget to to show the biggest obj files