* Makefile.in: Add html support.
        * java/Make-lang.in: Likewise.
        * fortran/Make-lang.in: Likewise.
        * treelang/Make-lang.in: Likewise.
        * doc/install.texi: Likewise.
        * doc/makefile.texi: Likewise.
        * doc/sourcebuild.texi: Likewise.

From-SVN: r90577