Makefiles.*: It should be possible to run 'make menuconfig' with no .config and no Make.defs file.  This change removes the dependency on Make.defs, but does not solve the problem of the missing .config file.  Without a .config file, it is not currently possible for the Makefile.* to correctly setup up the symbolic links to directories.

pthread robust mutexes:  Fix memmory trashing problem:  the main task may also use mutexes; need to check thread type before accessing pthread-specific mutex data structures.  Problem noted by Jussi Kivilinna.

vfs: fdopen: add missing file stream flags clearing.  Clear file stream structure regardless of config options. Structure clearing is needed as previous use of stream list entry might leave fs_flags set.

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>