STYLE: Minor style fixes

Removed a commented line in itkGradientVectorFlowImageFilter, fixed a
typo referrred to referred, and removed an extra indent when printing
the information on ImageBase class.

Change-Id: Iaa0227584d995125a63868c82e746fca5061caa4
BUG: Add missing header to the third party TIFF install.

Build errors will occur against an install when including
itkTIFFImageIO.h.

Change-Id: I26e0cf86622f41e326cf2373beb2d97f4f9081da
Merge branch 'TiffInstnall' into release
Merge branch 'release'
Merge topic 'stylefix'

a1bfd29 STYLE: Minor style fixes