Current extends for Globe and Map
Formatting change
First cut of widened vectors.
Shader working for widened lines.  More test code.
Values are hardwired, but dashes are working.  Sin curve testing also working.
Variable width hooked up.
Miter joins working for widened lines.
Texture application working.
Blended lines working.
Settled in sin^1/2 for the opacity.
Dashed line test.
Fixed a few single loading problems.
Merge pull request #190 from GeographicaGS/develop

Current extends for Globe and Map
Minor spelling and doc fix.
Merge remote-tracking branch 'upstream/develop' into develop

Conflicts:
	WhirlyGlobeSrc/WhirlyGlobe-MaplyComponent/src/MaplyViewController.mm