Add support for the UG-2843HHSWEG04 OLED and for the SAM4L Xplained Pro OLED module that uses that OLED.

Straighten out issues about who calls C++ initializers with CXXTEST or HELLOXX are built as NSH applications; Add an ofstream test to CXXTEST suggested by Michael; Update many defconfig fiels to that they set configurations to handle C++ constructors just as before these configuration changes

Change use of ferror() in uClibc++ so that is does not use more capability than is currently supported by the NuttX ferror()

Fix error in AT91SAM SPI driver introduced in recent comment.  Varioius improvements to README files and debug output

Add support for a generic windows-based EABI toolchain; Add NX configuration to force default NXTK border colors