Update to 1.13. Set LICENSE. New HOMEPAGE and MASTER_SITES.

enca-1.13 2010-02-09
  - Reverse usage of temp file while converting using recode to prevent
    file truncation (bug #1135).

enca-1.12 2009-10-29
  - Fixes some minor memory leaks.
  - Fixes little problems in autoconf scripts.

enca-1.11 2009-09-25
  - Dropped scanf configure test which is not used at all.
  - Fixes some wrong format strings.

enca-1.10 2009-08-25
  + Enca is back alive or at least in maintenance mode.
  * Enca now lives in git repository, see <http://gitorious.org/enca>.
  - Add missing charset koi8u to belarussian language.
  - Fixed some typos in program and documentation.

(wiz)