Use an unambiguous pow call.
make sure computeZoomLevel always returns a value.
Result of comparison against a string literal is undefined.
Remove unneeded statement that causes unused warning.
Add in exporting of classes from vtkMap.
No need to export Teardrop it is only used internally.
Add install rules so we install the library and headers.
Setup fpic rules and osx install name rules.
Properly install the export header for vtkmap.
Require CMake 2.8.11 or above.
Link to curl in a cross platform manner.
Export vtkGeoJSONMapFeature.
properly link to vtkDataSetReaders.
Merge pull request #57 from robertmaynard/windows_support

Symbol Exporting and Install Rules.
By default visual studio doesn't provide the M_PI define, so work around that.

It is far to complicated to make sure everything gets included in the right
order for that to happen for a header only class. Instead we provide our own
M_PI define if it isn't already defined.
Make sure to use double only when call std::pow.
Merge branch 'unambiguous_pow'
Merge branch 'missing_pi_define'

Conflicts:
	vtkMercator.h