BUG: Disable octave in Swig configure

If octave is installed but not the development libraries Swig will
generate a configuration able. To by-pass this disable ocatave during
super build of Swig.

Change-Id: I90d1cc054e511bd4ee0961781a1f536b562e28bd
Merge topic 'SIMPLEITK-397_AddInt64Pixels'

21ba4d4 ENH: update tests to optionally check 64-bit integer pixels
c9e9056 ENH: Make using 64-bit int pixels optional
4fc74e2 Adding support to import int64 images
ecd3163 Adding Get/Set pixel tests for int64 images
7bb92ce Adding numpy test for int64 images
ce1d8fb ENH: updating CastImageFilterTest for int64 images
51baa49 ENH: enabling 64-bit pixel IDS
Merge topic 'UpdateSimpleITKFilterCoverage'

4c82f99 Update filter coverage csv file via script
Merge topic 'AddScalarChanAndVese'

c7e8599 Adjusting testing tolerance for chan vese levelset
042f155 ENH: adding initial json for Review Chan and Vese levelsets
Merge topic 'UpdateITKv4.4.2'

6303caf Update ITK superbuild to 4.4.2
Merge topic 'DisableOctaveInSwig' into next

37f0b56 BUG: Disable octave in Swig configure
Merge branch 'master' into next

Change-Id: Ib479807881e75ffbe1773f92b7dcbbbb55249d91