Compiled files for gdal version 2

[danko-master]

[danko-master]

Updates for GDAL 2.1.0, released 2016/04/25

[zhm]

Thanks for this!

A few notes here:

• Can you please regenerate the bindings with the latest version of SWIG? I see it was generated using a previous version.
• There are 2 patches required that addressed previous issues

Patch 1 is https://github.com/zhm/gdal-ruby/commit/b471fd2f883aec0eaf101e9310e73aa8607aeb45 and changes the require path of the OSR module so it matches the structure of this project.

Patch 2 is https://github.com/zhm/gdal-ruby/commit/81ca5fe360e701d8c534a95aaf341df5a205b38e and fixes #2. It allows all of the bindings to be included at the same time. Without it, the symbols collide between OGR and GDAL. Best I can tell the ruby binding definitions upstream are just broken, or not intended to be used together.

[zhm]

One more question, does this change work with older versions of the GDAL binaries or does this require 2.1.x to work? That's a pretty major upgrade if it requires the newer version since there are a massive number of installations that probably won't get 2.x for a long time.