bogofilter 1.0.3 - stable release

In the two weeks since bogofilter 1.0.3 was released as "current" package, no serious problems were found. Bogofilter 1.0.3 has therefore been declared stable, and the files been moved to the "bogofilter-stable" package.

A known issue with 1.0.3: the file "RELEASES" that shipped with this release is in fact outdated and shows 1.0.2 as the recommended version. Please disregard this inconsistency.