<cite>The Fantasticks</cite>, reviewed by Steven Suskin
With imminent revivals of Broadway's third and fourth longest-running musicals (<cite>Les Miserables</cite> and <cite>A Chorus Line</cite>, respectively) -- while Nos. 1, 6, 7, 9 and 10 continue their runs -- it seems inevitable that someone would revive the longest-running musical in the history of the world. After a mere 4-1/2 years, the 1960 Off Broadway hit <cite>The Fantasticks</cite> has returned in a close re-…