shell: print command if not found
shell: fixup test_shell expect scripts
pkg/oonf_api: fix conflicting types on msba2
core:debug: documentation for `DEBUG_PRINT` was confusing and wrong
shell: fix newlines
x86: add read-before-write check at runtime

Finding read-before-writes statically is quite difficult. In native we
can use valgrind, but on boards without an MMU we are out of luck.

x86 has an MMU, let's use it.

If `-DDEBUG_READ_BEFORE_WRITE` was set, then pages on the heap get
initialized upon first use. If the page was read before written, then a
debug message with the virtual and physical address of the memory
location is printed, as well as the address of the offending instruction.
you can never have enough debugging in RPL
some minor fixes and debugging
set correct transceiver stack size for debugging
fixed debugging for cc110x
net: IPv6: RPL: more debug output
rpl: debug: use DEBUGF where necessary
vtimer: fix callback usage

There is no need to test the "handler" set in the vtimer struct, and
have some code executed then. We just can make the code to execute the
handler. To lengthy `if else if`, just a call.
x86: fix download script for OSX

Mac OSX does not have `wget`, but `curl`.
It does not understand `tar xJ`, but `tar xj`.
Merge pull request #1250 from Kijewski/x86-osx-fix-download

x86: fix download script for OSX
Merge pull request #1248 from thomaseichinger/debug_h_doc_fix

core:debug: documentation for `DEBUG_PRINT` was confusing and wrong
destiny: segfault due to dereferencing nullpointer
get_socket(i) returns NULL, when no specific socket is found.
Without an appropriate check for NULL, the current state
of the code leads to a segfault.

destiny: added parens

destiny: continuing the loop makes more sense than returning at first sight of NULL
Merge pull request #1269 from cgundogan/fix_get_waiting_connection_socket_null_check

destiny: segfault due to dereferencing nullpointer
core: fix variable name for sched_pidlist
Merge pull request #1272 from OlegHahm/sched_pidlist_fix

core: fix variable name for sched_pidlist