BUG: Fix ITK prepare-commit-msg hook for non-GNU sed

An expression of the form \(a\|b\) is a GNU sed extension.  Re-implement
insertion of the commit message prefix instructions to use portable sed
capabilities.

Conflicts:

	Utilities/Hooks/prepare-commit-msg
Merge topic 'SIMPLEITK-239_AddingSetupForDevelopment' into next

c0d6c24 BUG: Fix ITK prepare-commit-msg hook for non-GNU sed
Updated superbuild itk version to v4.1rc3

Change-Id: Icad824519c92bb3648f0fecf0d768990ddc1536e
Merge topic 'SIMPLEITK-248_UpdateITKTo41' into next

a6c724c Updated superbuild itk version to v4.1rc3
Coverted system call to kwsys Processing functions.

The "system" call is not portable because it relies on the system
shell, and issues related to handling of spaces was problematic on
windows. This approach uses kwsys's Process functiontion to create a
new process, and check to see if there is an initial error, the it is
detached from the calling.

Change-Id: I5c096b0f01bf4eff36665c62d1049ebc1fd07657
Merge branch 'SIMPLEITK-245_ImageJ64ForMac' into SIMPLEITK-257_FixShowForSpace-resolved

* SIMPLEITK-245_ImageJ64ForMac:
  Make the Show look for ImageJ64 on 64-bit Macs.

Conflicts:
	Code/IO/src/sitkShow.cxx
Merge topic 'SIMPLEITK-257_FixShowForSpace-resolved' into next

3138930 Merge branch 'SIMPLEITK-245_ImageJ64ForMac' into SIMPLEITK-257_FixShowForSpace-resolved
d71da2e Coverted system call to kwsys Processing functions.
Adding script to apply Apache License boilerplate to source code
Applied Apache License boilerplate to Testing source code
Applying Apache License boilerplate to Code subdirectory
Applying Apache boilerplate to Examples subdirectory
Applying Apache License to goovey utility script
Merge topic 'SIMPLEITK-259_ApplyApacheLicense' into next

3b677ad Applying Apache License to goovey utility script
feae5de Applying Apache boilerplate to Examples subdirectory
fdbcb8c Applying Apache License boilerplate to Code subdirectory
45828d1 Applied Apache License boilerplate to Testing source code
cf673a8 Adding script to apply Apache License boilerplate to source code
Merge topic 'SIMPLEITK-254_AutomaticRTesting' into next

13636a0 Adding R_values for tests which use arrays
5d20a4a Fixing R test by setting enums and boolean values
1521a0f Enabling R testing by fixing loading, and correcting template
8e6356a fix ConfigureFileBuildtime to work when called multiple times
e62aa28 The R shared library should be be prefixed with lib.
Applying Apache License to files in wrapping directory
Merge topic 'SIMPLEITK-259_ApplyApacheLicense' into next

7d7ee5e Applying Apache License to files in wrapping directory
Merge topic 'SIMPLEITK-254_AutomaticRTesting'

13636a0 Adding R_values for tests which use arrays
5d20a4a Fixing R test by setting enums and boolean values
1521a0f Enabling R testing by fixing loading, and correcting template
8e6356a fix ConfigureFileBuildtime to work when called multiple times
e62aa28 The R shared library should be be prefixed with lib.
Merge topic 'SIMPLEITK-235_FixCSharpAssemblyInfoForSimpleITK'

13b1ac9 Fix the versioning of SimpleITK C# assemblies.
Merge topic 'SIMPLEITK-257_FixShowForSpace-resolved'

3138930 Merge branch 'SIMPLEITK-245_ImageJ64ForMac' into SIMPLEITK-257_FixShowForSpace-resolved
d71da2e Coverted system call to kwsys Processing functions.
Merge topic 'SIMPLEITK-239_AddingSetupForDevelopment'

c0d6c24 BUG: Fix ITK prepare-commit-msg hook for non-GNU sed
3dd7285 adding needed git attribute to enable hooks check of text file
ad1580c BUG: corrected adding gerrit id to default to true