SAM4E UDP: Cosmetic updates to tracing and README
SAM4E-EK NSH:  Increase the number of preallocated WDOGS to 32 to avoid timeout failures
SAM4E UDP:  Fix handling of GLBSTAT:CONFIG bit.  Was not being set
Simplify last change to netdev_findbyaddr
SAM4E-EK:  Add an NSH configuration that uses a USB CDC/ACM console
SAM3/4 lowputc: Fix compile errors when there is no serial console
SAM4E-EK UDP: prevent some bad recursive behavior
Every ARM architecture must export g_instackbase
All ARM assertion logic will show stack usage on assertion if DEBUG_STACK is enabled
All ARM Make.defs files should build up_checkstack.c if DEBUG_STACK is enabled
Clean-up AVR stack colorization logic
AVR assertion logic will report stack usage on crash if DEBUG_STACK is set
Add logic to check interrupt stack usage
SAM4E-EK: Enable interrupt stack in all configurations
Fix bad configuration change of last commit
Fix version number display in NSH prompt
kconfig: Reorder some menus so that the display makes a little more sense
Cosmet update to debug messages and to comments
Fix condition in conditional compilation associated with USB monitor support
SAM4E-EK: Fixes for HSMCI compilation