"In brief, there is considerable evidence which suggests that the unborn is and should be considered a constitutional person, thus entitled to fourteenth amendment protections. If this be true, both the Roe holding as well as a legislative solution permitting abortions for reasons other than a threat to the life of the mother would have the effect of violating the unborn's right to due process of law. It would thus follow that both the judicial solution set forth in Roe and the legislative solution are constitutionally unsound."