* update flex to 2.6.3
* download .tar.gz (as upstream has dropped .xz)
* refresh patches

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

Update flex to 2.6.1
* Flex has moved to Github, adjust download link
* Remove patch that has been applied upstream
* Disable building tests to avoid circular dependency to bison
  - disable also docs and examples at the same time

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

SVN-Revision: 49025