Nucleo-F401RE: Board GPIOs updated by Frank Bennett
Sourceforge patch #40.  Fix some conditional logic in clock configuration.  From Luciano Neri
ARMv7-M:  Add FPU-related CFLAG settings for the CodeSourcery of Linux toolchain
Nucleo-F401RE:  Fix memory usage
drivers/mtd/w25.c:  Add support for the 8Mbit W25Q80BV part.  From Mark Whitehorn.
Update configuration an make logic in order to select that the serial blaster task priority and stack size. From Bob Doiron
SAM4S Xplained Pro:  update LED conrol logic. From Bob Doiron
Enhanced timer interface from Bob Doiron
SAM3/4: Enhanced timer/counter driver from Bob Doiron
The SAM4S Xplained Pro now uses the extended timer/counter features. From Bob Doiron.
Updated system timer logic from Bob Doiron
Updated system timer logic from Bob Doiron
Nucleo-F401RE:  Has only one memory region, not two
Simplified optimization for the SAM4E-EK
Refresh SAM4S Xplained Pro configuration
SAM4S Xplained Pro build fixes
The CONFIG_SYSTEMTICK_EXTCLK selection should only be available on systems that support it
If the CPU load measurements are being driven by an external clock, then the prototype for sched_process_cpuload() must be available in include/nuttx/arch.h
Fix configuration for F401:  It has has FSMC and so the option should not be offered.  But there are many more options available for the F401 that should be availalbe:  CAN, nonexistent timers, etc.  These will all need to be addressed
STM32 F401 has no CCM memory