BUG: Don't enable SSE rounding with OSX and gccxml

As of patch 409d86407e762c71eae598e7f8ed007b0e0a7ded, the required
intrinsic header is no longer included with during GCC_XML
running. The SSE2 intrinsic can safely be disabled during GCC_XML
parsing.

Change-Id: I7c7336f81753257b61dc631f5197af27b6ac6905
BUG: Register AzimuthElevationToCartesianTransform to factories.

ITK-2953.

Change-Id: If4f2e99b9ab024d7d70e1c79717333dcd815e801
DOC: Update texture feature class references.

The classes were refactored as described in

  http://itk.org/Wiki/Proposals:Refactoring_Statistics_Framework_2007_Migration_Users_Guide

Change-Id: I34fdc3f6c7f98dcf434404093d8d245e78c2d119
Merge topic 'FixOSXGCCXMLSSEInstructions'

f0f96dfc BUG: Don't enable SSE rounding with OSX and gccxml
BUG: Fix texture feature correlation computation for constant image.

Prevent returning NaN.

ITK-3081

Change-Id: Ibcdf39c9183be21fb0b2c3f47b1cdde029ce588e
Merge topic 'AzimuthTransformRegistration'

854be838 BUG: Register AzimuthElevationToCartesianTransform to factories.
BUG: Fix text in margin issues

Change-Id: I2e51e6f723671758426e0d744989489528beaa5e
Merge topic 'book1-amazon-fixes'

e5fef514 BUG: Fix text in margin issues
Merge topic 'TextureFeaturesNaN'

c85c9475 BUG: Fix texture feature correlation computation for constant image.
358d7c11 DOC: Update texture feature class references.