RGMP 4.0 update from Qiang Yu

misc/tools/README.txt

misc/uClibc++/libxx/uClibc++/Make.defs

misc/uClibc++/libxx/uClibc++/vterminate.cxx

nuttx/ChangeLog

nuttx/arch/arm/src/stm32/chip/stm32f10xxx_gpio.h

nuttx/arch/rgmp/include/arch.h

nuttx/arch/rgmp/include/irq.h

nuttx/arch/rgmp/include/math.h

nuttx/arch/rgmp/include/stdbool.h

nuttx/arch/rgmp/include/x86/arch/subarch/arch.h

nuttx/arch/rgmp/src/Makefile

nuttx/arch/rgmp/src/bridge.c

nuttx/arch/rgmp/src/cxx.c

nuttx/arch/rgmp/src/nuttx.c

nuttx/arch/rgmp/src/rgmp.c

nuttx/arch/rgmp/src/x86/arch_nuttx.c

nuttx/arch/rgmp/src/x86/com.c

nuttx/arch/rgmp/src/x86/sigentry.S

nuttx/configs/rgmp/x86/cxxtest/Make.defs

nuttx/configs/rgmp/x86/cxxtest/appconfig