Ensure netlib will not be broken when setip will not bring the network up anymore

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

apps/examples/mtdpart: Prevent part array overflow.  mtdpart examples create partions and allocate from 1 index not a 0 index to part[] array. This cause buffer overflow for part array.  This change fixes this problem.

wireless/ieee802154: i8sak adds event handling from MAC char driver

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

apps/platform:  Create gnu/ subdirectory that contains the one and only GNU C++ initialization function.  Remove all other C++ initialization functions.

Canard

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

Fix the new can.h header location

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

Bitbucket Issue 5, apps build system: The previous patch wasn't complete, it was just idea how to resolve issue.  Please, find attached issue5.patch to resolve it. It can be applied on top current apps/master. From Artur Mądrzak.

Issue 5:  I found an unexpected behavior in apps/ configuration generation. Adding external symbolic link in apps/ directory and using Make.defs for Kconfig generation, Kconfig file has a wrong path in the source argument. It contains original dir path outside of the source tree instead path to sub-directory in apps/.

The problem is connected with make/system symbolic link path resolution.  Corrected by a patch submitted by Artur Mądrzak with Issue 5.

wireless/ieee802154: Brings closer to NuttX Coding Style

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

wireless/ieee802154: Restructures i8sak app and adds blaster functionality

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

NSH wireless setup: Move call to nsh_associate().  It should be possible to associate with an AP when DHCPC is disabled.