Moved aspell-* packages as discussed. Reasons being:

1) Shorter package name;
2) Be consistent with kde3-i18n-*, kde4-l10n-*, hunspell-*, lang-*
   PKG_OPTIONS;
3) Simplify modifications to PKGNAME in their Makefiles;
4) Accordance with international language naming standards;
5) Facilitate the addition of other dictionaries which are variants of the
   same language (ex. Portuguese and Norwegian);

May this commit not cause anything to explode, hairs to gray, nerds to rage
Last minute move of aspell-pt -> aspell-pt_PT, because aspell-pt_BR is
also possible.