pthread_trylock: Fixes a problem in pthread_trylock() noted by initialkjc@yahoo.com.  When CONFIG_PTHREAD_MUTEX_UNSAFE=y, the special return value EAGAIN was not being detected due to differences in reporting of returned values.

PIC32MX7MMB: Repartition files to match newer configurations.   Add support for PROCFS file system.  Default is now Pinguino toolchain.  Verifty networking.

Pcd8544

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Upstream kinetis

TCP: tcp_input() now receives IP domain as an input parameter vs. deriving from the IP header length.

Fixes in network library and tcp stack.

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

This fix sets h_name in struct hostent returned by gethostbyname()

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

Canbus

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Canbus

Approved-by: Gregory Nutt <gnutt@nuttx.org>

STM32L4:  Add IWDG peripheral.  This is the same as for STM32 except that prescale and reload can be
changed after watchdog has been started, as this seems to work on L4.

netdb: Fix time info in lib_dnscache.c

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>

Bug fix by sony

Approved-by: Gregory Nutt <gnutt@nuttx.org>