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!

     1.1 --- a/.version	Wed Jan 16 22:21:55 2008 +0000
     1.2 +++ b/.version	Wed Jan 16 22:25:32 2008 +0000
     1.3 @@ -1,1 +1,1 @@
     1.4 -0.3.2+svn
     1.5 +1.0.0