[PATCH] Fix configure script to properly detect gmime-2.6 if available.

[David Bremner]

On Thu,  8 Mar 2012 08:45:01 -0800, Jameson Graef Rollins <jrollins at finestructure.net> wrote:
> Previously, the configure script would appear to detect gmime-2.6 if
> present.  However, the binaries would end up being compiled against
> gmime-2.4.  The addition of a break fixes things so that now gmime-2.6
> will be used if available, falling back to gmime-2.4.

pushed.