PX4-NuttX/nuttx branch test: px4-master_auto_rebase

NuttX:
 - https://github.com/PX4-NuttX/nuttx/tree/px4-master_auto_rebase
 - PX4/NuttX@a117c50

Changes from PX4-NuttX/nuttx (PX4/NuttX@6377532) in current PX4/master (e263af3)
PX4/NuttX@6377532...a117c50

a117c50 (HEAD, origin/px4-master_auto_rebase) [PX4: WIP] Fix transmission status handling in the serial interrupt
780194d [PX4: REJECTED] cstdint fix
c81eef7 [PX4: REJECTED] add math.h
50edaa0 [PX4: WIP] Jenkinsfile
5b899b7 (origin/master) drivers/sensors:  Add support for Telair T6713 carbon dioxide sensor
ba1f8e5 Merged in kekiefer/nuttx/stm32f7-serial-fix-tiocssinglewire-upstream (pull request #658)
a7a258e Merged in masayuki2009/nuttx.nuttx/lc823450_bt (pull request #657)
2f921fb Merged in antmerlino/nuttx/xbee-timeout-fix (pull request #656)
fd43981 libs/libc/netdb:  Remove another use of the restrict keyword.
c213bac include/netdb.h:  remove use of 'restrict'.  Causes compile errors with some toolchains.  Add formal parameter names to prototypes so that they are more self-documenting.

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

Changes from PX4-NuttX/apps (PX4/NuttX-apps@7e2f17d) in current PX4/master (e263af3)
PX4/NuttX-apps@7e2f17d...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)