PX4-NuttX/nuttx branch test: px4-master_auto_rebase

NuttX:
 - https://github.com/PX4-NuttX/nuttx/tree/px4-master_auto_rebase
 - PX4/NuttX@9874e65

Changes from PX4-NuttX/nuttx (PX4/NuttX@d5c12b2) in current PX4/master (dec0387)
PX4/NuttX@d5c12b2...9874e65

9874e65 (HEAD, origin/px4-master_auto_rebase) [PX4: WIP] Fix transmission status handling in the serial interrupt
e1825e3 [PX4: REJECTED] cstdint fix
4a6c13c [PX4: REJECTED] add math.h
32de998 [PX4: WIP] Jenkinsfile
9e63080 (origin/master) Merged in raiden00/nuttx/stm32h7 (pull request #670)
70dc642 The LPC54608 can only run at a maximum frequency of 180Mhz.  This configuration requires uses the clk_in, external crystal clock, to drive the PLL.  When that input was selected, the board bootup failed waiting for the PLL to lock.  After referring the driver from NXP, we should turn on power sources for the ext clock if system pll input select clk_in.  NOTE that the LPC54628 did not require this step... perhaps because the system oscillator power was already enabled.
a764e4a  drivers/leds/pca9635pw.c configs/stm32f4discovery/src/stm32_pca9635.c: Fix pca9635pw LED driver compilation
1450c0c arch/arm/src/stm32f7/stm32_sdmmc.c:  Fix some missing right parentheses.
6571d4f Update some comments.
078fd78 Merged in raiden00/nuttx (pull request #669)

Apps:
 - https://github.com/PX4-NuttX/apps/tree/px4-master_auto_rebase
 - PX4/NuttX-apps@444ee16

Changes from PX4-NuttX/apps (PX4/NuttX-apps@36806ba) in current PX4/master (dec0387)
PX4/NuttX-apps@36806ba...444ee16

444ee16 (HEAD -> px4-master_auto_rebase, origin/px4-master_auto_rebase) [REJECTED] add-var-expansion-in-nsh-parse.patch
e66470d (origin/master) Merged in raiden00/apps (pull request #143)
db77b1e apps/examples/tcpblaster:  Fix an error in time calculation.
19b8a52 apps/examples/tcpblaster/tcpblaster_server.c:  Start time was not being initialized on the server side on the first pass through loop so the first output record had a crazy time.
749eccb Squashed commit of the following:
4d8b8fa apps/netutils/dhcpc:  Activates BINDTODEVICE if available, and break up some long lines
0abe341 Merged in raiden00/apps (pull request #142)
3403b1b apps/nshlib/README.txt:  Clarify arguments to the mkrd command.
abcb66c Remove apps/interpreters/micropthon.  There are several reasons for this.  (1) the current version 1.3.8 is very old and no one is supporting it.  (2) the port only includes the core micropython logic and none of the Python libraries.  As such it is useless in any real application.  (3) There have recently been compile failures reported.  It looks like this is due to changes in newlib based toolchains that now bring in incompatible newlib header files.  See issue 104 at https://bitbucket.org/nuttx/nuttx/issues/104/build-micropython-138-error.  With no one dedicated to the support of micropython, it can no longer be carried in the NuttX apps/ repository.
36d6348 apps/nslib:  Try to eliminate and uninitialized variable warning.