Send --help message to stdout i.s.o stderr
Send --help message to stdout i.s.o stderr

This allows fun stuff such as `bitcoin --help | less`, and more
easy piping to files.

Looking at other tools such as bash, gcc, they all send their help
text to stdout.

ghostlander/Testcoin,ghostlander/Testcoin,jlay11/sharecoin,ghostlander/Testcoin,jlay11/sharecoin,jlay11/sharecoin,jlay11/sharecoin,jlay11/sharecoin,jlay11/sharecoin,ghostlander/Testcoin