Ruby 1.9.2 RC1 was released

At the same time on Ruby 1.9.1 p429 release, Ruby 1.9.2 RC1 was also released. Of course, It's ready for Linux and MinGW, see corresponding instructions on these articles(for Linux / for MinGW).

If you fail MinGW instruction, you may success with --srcdir=. option.

Youhei@3935-CF61 ~/ruby-1.9.2-rc1 $ ./configure --prefix=c:/ruby-1.9.1 --enable-shared --srcdir=.
Youhei@3935-CF61 ~/ruby-1.9.2-rc1 $ make
Youhei@3935-CF61 ~/ruby-1.9.2-rc1 $ make install