boards/f4vi1: fix potential build issue in uart conf

boards/msbiot: Configured cc110x as default netdev

sys: netopt: add checksum and busy options

 - Adjusted `#define`s to match the naming convention of `cc110x_params.h`
 - Enable the `cc110x` module if `netdev_default` or `gnrc_netdev_default` is
   used

 - Replaced magic numbers in the CC110X configuration of the MSBA2
   with SPI_DEV(x) and GPIO_PIN(x, y) macros
 - Adjusted implementation of `cc110x_params.h` to match the code of `at86rf2xx`
 - Made MSBA2's CC110X parameters the default configuration

cpu/lpc2387: Fixed broken SPI driver

In commit 513b20ff the SPI API was changed to
power up an configure the SPI bus on spi_acquire(). Sadly, the lpc2387 SPI
apparently needs to be reconfigured after each power up. This commit moves
the initialization code required after each power up from spi_init() to
spi_acquire().

pkg/tlsf: revert to original api

- Cleanup package makefile.
- Download directly from git.
- Remove giant patch.
- Implement malloc function as a contrib package.
- Update ccn example.
- Update ps command.

trickle: remove msg_time member from struct

dist: tools: git-cache: update to latest upstream

Upstream commit 04f04e5272f9fd68113a7f07ef034dd672630c79

https://github.com/kaspar030/git-cache/tree/04f04e5272f9fd68113a7f07ef034dd672630c79

sys/uart_stdio: compile with -Wno-cast-function-type

The msg_time member is only locally used and set before read. It can
be removed as the state kept by the member is not used.

tests: add more hardware in the loop tests

native: define PROVIDES_PM_SET_LOWEST

pkg/libcose: Use RIOT random_bytes instead of randombytes

pkg/hacl: Use RIOT random_bytes instead of randombytes

pkg/tweetnacl: Use RIOT random_bytes instead of randombytes

core: make assert() an expression.

 tests/unittests: add empty list clist_foreach case 

examples/filesystem: fix typos and cleanup

Add clist_foreach empty list test case which should:

* not call `func`
* return `NULL`

core/clist: make clist_foreach() return break-causing node

The "verbose" alternative for assert() is now an expression and
can be used in all the places that a funcion call can be used.

tools/check: use RIOTTOOLS variable

boards/nucleo-l496zg: add initial support