PX4-NuttX/nuttx branch test: px4-master_auto_rebase

NuttX:
 - https://github.com/PX4-NuttX/nuttx/tree/px4-master_auto_rebase
 - PX4/NuttX@502ce9a

Changes from PX4-NuttX/nuttx (PX4/NuttX@6377532) in current PX4/master (ebc4006)
PX4/NuttX@6377532...502ce9a

502ce9a (HEAD, origin/px4-master_auto_rebase) [PX4: WIP] Fix transmission status handling in the serial interrupt
0ffd46f [PX4: REJECTED] cstdint fix
a81cc04 [PX4: REJECTED] add math.h
d801457 [PX4: WIP] Jenkinsfile
75220e2 (origin/master) arch/arm/src/stm32h7: Correct permissions on several files.
7b04754 This commit brings in a partial, WIP port to the STMicro STM32H7.  The port is still missing several key components that make unusable in its current form.  However, the changes have lingered on a branch long enough.
c0eecb6 configs/nucleo-f4x1re/src/stm32_spi.c: Fix missing left bracket.  Thanks to hyungsubkim for posting Issue #102
9e872fd Various locations: Fix typos due to missing right parenthese.  Thanks to hyungsubkim for posting Issue #102
edd4d44 Oops.  Forget to add file before commit 5fb988b
32afb76 arch/arm/src/bcm2708/bcm_gpioint.c:  Fixed missing left parenthesis.  Note by Anonymous in Issue #101

Apps:
 - https://github.com/PX4-NuttX/apps/tree/px4-master_auto_rebase
 - PX4/NuttX-apps@3236f02

Changes from PX4-NuttX/apps (PX4/NuttX-apps@36806ba) in current PX4/master (ebc4006)
PX4/NuttX-apps@36806ba...3236f02

3236f02 (HEAD -> px4-master_auto_rebase, origin/px4-master_auto_rebase) [REJECTED] add-var-expansion-in-nsh-parse.patch
133f239 (origin/master) Merged in raiden00/apps (pull request #141)
e4a30d5 apps/Make.defs:  Simplify last fix
bf23277 apps/Make.defs:  Fix an error introduced with recent chagne.  MKKCONFIG may not be defined resulting in failure to create apps/Kconfig.
36e04b3 apps/examples/gps:  Add GPS example using MINMEA lib
6aad29e apps/gpsutils/minmea: Include wchar.h in minmea.c file to fix wint_t error
301fe28 Merge branch 'master' of bitbucket.org:nuttx/apps
67e6e33 Merged in masayuki2009/nuttx.apps/taskset_command (pull request #140)
c36a5c1 apps/examples/ostest:  Signal handling tests should use the same configurable stack size as used in other tests, not PTHREAD_STACK_DEFAULT.
0c867bc Merged in MarcoKrahl/apps/ltdc (pull request #139)