Changed the meaning of the uip_*input functions. They now return success when a packet is dropped; This is needed for the ENCX24J600 driver that must make a decision to return the packet or not:  It should not retain dropped packets. From Max Holtzberg

Notify the socket layer if a connection is lost before the monitoring callback has been registered.  From Max Holtzberg

SAMA5 LCDC:  Wait when the LCDC is resynchronizing (SIF); Try start-up parameters from Barebox (this still don't work)

SAMA5 LCDC: Move DMA descriptors out of internal SRAM and into SDRAM. I am not completely clear, but it looks like the LCDC cannot support DMA from internal SRAM

Add option to enable Aduino Due specific logic, like pull-up on UART0 RXD.  Suggested by gdi@embedders.org

Make net_close() nonblocking and free unestablished connections if no free connections available.  From Max Holtzberg

Another case where we should use the routing table: There may be multiple routers on the same network.  In that case, we have to search for the routing table for the router that forwards to the destination address.  We do this when we determine the MAC address we want in the ARP logic

netdev_findbyaddr() will not use a routing table if one is available.  It will also make a better decision in the case there there is no routing table but only a single network interface.

Add framework for Spark Core board support.  The initial commit is a clone of the Maple Mini and still needs Spark customizations

Add freedom-kl25z/minnsh configuration:  This is an experiment to see just how small we and get an NSH configuration.  From Alan Carvalho de Assis.

OS startup logic should not call group_setupidelfiles() if there is no file system support configured

Networking:  Fix backward conditional in test to see if address is in ARP table.  From Max Holtzberg

Networking: If sending out of the subnet, device lookup by IP will fail.  Fall back to ETH0 for now.  From Max Holtzberg

SAMA5 GMAC:  Initial driver check-in is just the EMAC driver forced to compile with the GMAC register definitions

Mov apps/examples/composite to apps/system/composite; convert configs/stm3210e-eval/composite to use kconfig-frontend tools -- untested