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
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
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
Proposal for common 802.15.4 radio driver API definition.
Merge pull request #1031 from LudwigOrtmann/issue_676

redbee-econotag: fix maca
Add "compile everything" tool

Having many tests is quite futile if they aren't executed once in a
while<sup>[citation needed]</sup>.

Alas, this is not the purpose of this PR. This PR adds the tool
"compile_test.py", which executes `make buildtest` for all applications
in `examples` and `tests`, and prints a comprehensive list of the
results.
Merge pull request #1048 from Kijewski/compile_test

Add "compile everything" tool
ccnl: don't include c files

this fixes a build problem on
debian and ubuntu based systems
test_nativenet is only useful for native ...