[Checkers] Spaces in commented JSR 308 annotations

[Adam Kiezun]

> The new compiler accepts an argument -Xspacesincomments that causes the
> compiler to recognize annotation comments when they contain spaces.  You may
> need to be careful with block comments (not javadocs) that start with @,
> though.

Why not have the compiler always  recognize the annotations? That is,
why would I not always want to use the option?

/adam