Bump version to 1.0.0.

I consider crosstool-NG to be stable enough that a 1.0.0 release is acceptable.
I've been using it daily since a long time without really serious _crosstool-NG_
bug (although there are a few minor ones).

There is still a lot of work, especially with Super-H and IA64 support, which
are both marked EXPERIMENTAL.

Enjoy!

 comment "ARM specific options"

 config ARCH_ARM_EABI

     bool

     prompt "Use EABI (EXPERIMENTAL)"

     depends on EXPERIMENTAL

     default n

     help

       Set up the toolchain so that it generates EABI-compliant binaries.