For now, I left the following instances because it isn't
clear to me why they are using the different values.
Maybe they need one-by-one inspection.
examples/igmp/Makefile:STACKSIZE = 1024
examples/powerled/Makefile:STACKSIZE = 1024
examples/powermonitor/Makefile:STACKSIZE = 768
examples/relays/Makefile:STACKSIZE = 512
examples/smps/Makefile:STACKSIZE = 1024
graphics/screenshot/Makefile:STACKSIZE = 4096
system/flash_eraseall/Makefile:STACKSIZE = 1024
testing/cxxtest/Makefile:STACKSIZE = 4096
testing/smart_test/Makefile:STACKSIZE = 4096
1. Check NSH_NETINIT for self network initialization
2. Check NSH_ARCHINIT for sel arch specific initialization
3. Always show help regardless of NSH_BUILTIN_APPS
4. Loop forever regardless of NSH_BUILTIN_APPS, user could:
a.change the default behavior by the command line argument
b.or ctrl+c to break out the loop