v0.9: Version 0.9

Changelog:
- Introduced context attributes
- Add API for querying the list of enabled backends
- IIOD can now serve over USB (using FunctionFS)
- Fix occasional buffer drops in IIOD
- Python bindings are now compatible with Python 3
- Add support for scanning in Python bindings
- Fix USB backend on Windows >= 8.1
- Add auto context creation in iio_readdev/iio_info
- Lots, lots of bug fixes

test release build from git master 164de86

test release build from master 164de86

Libiio release 2015.2

Libiio release 2015.2

Built from commit 1856316.

Libiio release 2015.1-45

appveyor.yml: Generate GitHub releases from the 2015_R1 branch

Signed-off-by: Paul Cercueil <paul.cercueil@analog.com>

Libiio release 2014.2-15

2014.2-r1

Merge branch 'master' into 2014_R2