Log Message:
ucblogo: Update to 6.2.1

* Update HOMEPAGE and COMMENT.
* Use tarball from GitHub.
* Use wxWidgets unconditionally (cannot disable wxWidgets anymore).
* Set LICENSE.

Changelog:
6.2.1
Corrects manual page name from logo to ucblogo to match executable.
(Note: Windows executable and Mac dmg installs do not need this so only
the .tar.gz is provided.)

6.2
This is a maintenance release of the UCB Logo programming language interpreter.
Fixes and Updates:

    multiple bug fixes
    a new autoconf based build system
    optional object oriented logo ( --enable-objects )
    Renamed executable from logo to ucblogo for unix.

This includes work from dmalec, Barak A. Pearlmutter, janekr, hosiet, reinerh,
atehwa, kilobyte, brianharvey, pahihu, and jrincayc.

6.1
This is a maintenance release of the UCB Logo programming language interpreter.
Fixes and Updates:

    64 bit support (fixes bug that prevented drawing large numbers of lines in \ 
64 bit mode)
    wxWidgets 3.0 support
    License changed to GNU General Public License 3 or newer
    Support for compiling for 64 bit MacOS