package/usb_modeswitch: bump to version 2.6.0

package/usb_modeswitch: bump to version 2.6.0

- Drop first patch (not needed anymore) and all jimtcl related
  workarounds as embedded jimtcl has been removed
- Parallel build issue has been fixed
- Update hash of COPYING as this file has been updated to reflect that
  dispatcher.c is under BSD-2-Clause

Full ChangeLog: http://www.draisberghof.de/usb_modeswitch/ChangeLog

Upstream provides an md5 of the tarball, so we add it (even though
that's a weak hash).

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[yann.morin.1998@free.fr:
  - meld with the license fix patch
  - simplify license list
  - add md5 from upstream
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>