HSUM: correct formatting issues

Replaced the file header with the Tau Labs template.
btw. I used the dsm-code as skeleton. May be i should place a note?
HSUM: edit filename in pios_hsum_priv.h header
HSUM: correct formatting issues.
HSUM: add failsafe behavior for SUMD after reset/timeout.

The SUMD protocol sends failsafe data after poweron. Failsafe channel
fata were only accepted after a first living frame from tx. Thanks to
rdnzl.
HSUM: unwrap the options in flyingf3 hardware description
HSUM: add support for quanton board.

unwrapped the definition xml and added the receiver options. Inserted
code lines to make use of the receiver protocol on all uarts.
HSUM: unwrap xml files for better readability
HSUM: add support for Sparky on recevierport

Note: You must provide the Graupner with 5V. But the output level is
only 3V. That should not be a problem.
HSUM: move pios_hsum.c to common. no processor specific code inside. add support for flyingf4

Moved pios_hsum.c to PiOS/common. Because there is no platform depended
code inside. Removed some unnessary definitions. Magic numbers were
defined pios_hsum_priv.h.
Merged uart configurations of dsm and hsum in the upgraded targets.
They are the same.
HSUM: moved protocol documentation from .h to .c source
HSUM: move define lines from .h to .c source
Merge pull request #820 from ernieift/next

Implementation of Graupner SUMD und SUMH receiver protocol
Moved RM tool definition into OS specific makefile, and move tool
definitions into tools.mk
Merge pull request #850 from rdnzl/svg_fix

Attempt to fix system-health-linear.svg
F4 targets: disable PIOS_INCLUDE_FASTHEAP

This setting prevents saving stabilization settings. Disabling this
setting is a short term workaround for the problem until a ultimate
fix is in place.

Fixes #855
Merge pull request #856 from peabody124/f4_fastheap

F4 targets: disable PIOS_INCLUDE_FASTHEAP
uavobjmgr: 4-byte align the load/save trampoline buffers

Any buffer used for DMA must be 4-byte aligned on F4 CPUs.
uavobjmgr: fix typo in uncompiled code path
uavobjmgr: correct FASTHEAP macro to enable trampoline buffers
Revert "F4 targets: disable PIOS_INCLUDE_FASTHEAP"

This reverts commit 0210ece5a3e02581cc95e9fc14b722aab6e16cd8.