configs/*/defconfig:  If CONFIG_NSH_LIBRARY is set, make sure that CONFIG_NSH_READLINE is also set or the configuration will use the CLE the next time it is reconfigured

procfs:  Remove newline from the end of the cpuload and loadavg outputs so that the returned percentages can be printed on the same line as other data.

SAM4E:  Completes all SAM4E register definition header files.  Also a SAMA5D3 ADc register definition fix

networking: Fix one place where the reference count was not being zeroed.  This is really a cosmetic fix UNLESS CONFIG_DEBUG_NET is enabled, then it causes assertions

SAM4E: Update SAM3/4 GPBR, HSMCI, PWM, RSTC, RTC, RTT, SMC, and WDT register definition header files

ARMv6-M/ARMv7-M: Correct a register handling error in signal delivery (Kernel build mode only).  Noted by Mike Smith.

Comment out all CONFIG_APPS_DIR settings in all defconfig files.  We con't know where the apps/ dir will be be until install time

Add CONFIG_DEFAULT_SMALL that will select default values for configuration settings based upon either more features or smaller footprint.  Turns out not be be useful for modifying existing defconfig files because the defaults do not apply in that case