package/flite: bump to version 2.1

- Update site to get latest version
- First patch is not needed since
  https://github.com/festvox/flite/commit/e7e4868ad7a65eb6ed2966dd5048c4bfeb14f23f


- Update second patch
- Drop third patch (not needed anymore)
- Update hash of COPYING:
  - BSD-2-Clause for Palm source code removed
  - Add SUN Microsystems license for g72x files
  - Add Apache-2.0 for lang/cmu_grapheme_lex/grapheme_unitran_tables.c
- Update indentation of hash file (two spaces)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>