COMP: Fix double-convert external project so that it works as intended

1) The previous version was working because the double-conversion project
was exporting its build tree in the cmake package registry.

See http://www.cmake.org/cmake/help/v2.8.10/cmake.html#command:export

Since the package was exported, the find_package(double-conversion ..) within
BRAINSTools was working. Line like the following weren't not used at all:

  list(APPEND ${CMAKE_PROJECT_NAME}_SUPERBUILD_EP_VARS ${extProjName}_DIR:PATH)

2) Remove dependency to DCMTK. See https://github.com/BRAINSia/BRAINSTools/issues/5

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21791 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Fix "-fPIC" DWIConvert build error related to DoubleConvert project

See also https://github.com/BRAINSia/BRAINSTools/issues/3

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21792 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Update ExternalData module to version 1fd8d01 available in recent CMake

It includes the following fixes:

2013-02-04	Brad King	ExternalData: Attach download rules to content links...
2013-01-30	Brad King	ExternalData: Collapse ../ components in DATA{} paths
2013-01-30	Brad King	ExternalData: Add support for SHA 1 and 2 hash algorithms
2013-01-30	Brad King	ExternalData: Generalize hash algo/ext handling
2013-01-30	Brad King	ExternalData: Allow DATA{} syntax to reference directories
2013-01-30	Brad King	ExternalData: Allow ()-groups in series match regex
2013-01-29	Brad King	ExternalData: Improve series matching using an explicit...
2013-01-28	Brad King	ExternalData: Remove unused private interface
2013-01-28	Brad King	ExternalData: Cleanup stray TODO and typo in comments
2013-01-28	Brad King	ExternalData: Do not match directory names when resolvi...
2013-01-24	Brad King	ExternalData: Remove compatibility with CMake < 2.8.5
2013-01-24	Brad King	Add ExternalData module

See here for details: http://cmake.org/gitweb?p=cmake.git;a=history;f=Modules/ExternalData.cmake;h=9d84f8d135ae8b4e86d78a2e3b570a3b520445a1;hb=HEAD

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21793 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Update Slicer test macros to support ExternalData

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21794 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Clean code and add command line option "--temporary-path"

Remove unused headers

Remove tempDirectory initially added with r11985,
qSlicerCoreApplication::temporaryPath  (added with r15424) should be used
instead.

Calling slicer with both --testing and --temporary-path options returns
the directory associated with testing.

$ ./Slicer --temporary-path
/tmp/Slicer

$ ./Slicer --testing --temporary-path
/tmp/Slicer-tmp

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21795 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Add saveNode and saveScene to python API

Example:

  n = slicer.util.GetNode('MRHead')
  slicer.util.saveNode(n, '/tmp/foo.nrrd')  # Save node data

  slicer.util.saveScene('/tmp/currentscene.mrml') # Save scene as MRML file

  slicer.util.saveScene('/tmp/currentscene.mrb') # Save scene as MRB file

  slicer.util.saveScene('/tmp/currentscene') # Save scene as directory

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21796 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Add python unitTest testing slicer.util.{saveNode, saveScene} methods

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21797 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: Fix typo and remove "Qt" from message associated with slicerMacroBuildQtModule

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21798 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Added first cut of vtkMRMLNode reference API

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21799 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: implementation of vtkMRMLNode reference API

Implemented Get/Set/SetAndObserve methods in vtkMRMLNode class

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21800 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: Bump SlicerExecutionModel ExternalProject to be11bda829.

Include improvements to GenerateCLP.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21801 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: Reverted erroneously commit from github


git-svn-id: http://svn.slicer.org/Slicer4/trunk@21802 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Update DoubleConvert tag and remove hack to manually add "-fPIC"

This reverts commit r21792 and also update DoubleConvert external project.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21803 3bd1e089-480b-0410-8dfb-8563597acbee
STYLE: Update BRAINSTools project to remove extra message debug statement

See https://github.com/BRAINSia/BRAINSTools/pull/8

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21804 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Update ExternalData and remove hack in SLICER_ADD_PYTHON_UNITTEST

ExternalData module has been updated to preserve escaped semicolons during
argument expansion.

Details: http://cmake.org/gitweb?p=cmake.git;a=commit;h=1823ab4d76d8efe79bed85328a3f8c74c7d625bd

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21805 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Ensure BRAINSTools uses Slicer ExternalData by replacing it.

This is obviously a hack allowing to use ExternalData withing Slicer while
building BRAINSTools. An issue has been reported upstream.
See https://github.com/BRAINSia/BRAINSTools/issues/3

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21806 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: figured out why transitioning to SpatialAtlas Step takes so long when loading the FullParcellation task and removed bug when setting atlas or subparcellation to None - it was not saved in mrml

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21807 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: not all of CSF was part of the sub atlas

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21808 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: expose qMRMLCheckableNodeComboBox methods to python

Per request from Kostro Daniel on slicer-dev list.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21809 3bd1e089-480b-0410-8dfb-8563597acbee
ENH: 2727. Implemented new generic MRML node reference API in the vtkMRMLNode class. Implemented vtkMRMLDisplayableNode, vtkMRMLStorableNode, vtkMRMLTransformNode node using new API. Added tests to Libs/MRML/Core/Testing/vtkMRMLNodeTest1.cxx. See below for more details on the API.

== Goal ==
This page explains how to create a MRML node that reference and observes
other MRML nodes.

== History ==
In Slicer4.2 prior to March of 2013 each MRML node that contained
references to other MRML nodes (for example each vtkMRMLDispalyableNode contained
a reference to an instance vtkMRMLDisplayNode) was responsible for
managing the references internally. This involved complicated logic and
bookkeeping to maintain the references in sync when importing scenes,
adding/deleting nodes, modifying referenced nodes, etc.

When creating a new node with the reference to another node the following
methods needed to be created/updated to handle the references:


* Copy
* PrintSelf
* ReadXMLAttributes
* WriteXML
* ProcessMRMLEvents
* UpdateReferenceIS
* SetSceneRefeecnes
* UpdateScene
* UpdateReferences
* SetAndObserveReferenedNode

== New API ==
The new node reference API automatically takes care of read/write/copy of
node references, updating references on scene import, adding and deleting
nodes. All that functionality in implemented the vtkMRMLNode base
class. The only thing that needs to happen in the derived MRML node class
(usually in the constructor of the class)
is a call to vtkMRMLNode::AddNodeReferenceRole(const char *referenceRole,
const char *mrmlAttributeName)
that takes a unique string defining the reference role between this node
and the referenced node, and a MRML attribute name for storing the
reference in the .mrml file.

The only other call that is needed is either:
vtkMRMLNode* SetAndObserveNodeReferenceID(const char* referenceRole , const
char* referencedNodeID, vtkIntArray *events=0);
or 
vtkMRMLNode* AddAndObserveNodeReferenceID(const char* referenceRole , const
char* referencedNodeID, vtkIntArray *events=0);
if the multiple instances of this reference are allowed.

vtkMRMLNode also provides virtual callbacks that can be extended in the
derived calsses:
* OnNodeReferenceAdded(vtkMRMLNodeReference *reference)
* OnNodeReferenceRemoved(vtkMRMLNodeReference *reference)
* OnNodeReferenceModified(vtkMRMLNodeReference *reference)

By default those methods generate the following events:
* vtkMRMLNode::ReferenceAddedEvent
* vtkMRMLNode::ReferenceRemovedEvent
* vtkMRMLNode::ReferenceModifiedEvent

In the derived classes those methods could be extended using vtkMRMLNode
API that allows querying of node's references:

* char *GetNthNodeReferenceID(const char* referenceRole, int n);
* vtkMRMLNode* GetNthNodeReference(const char* referenceRole, int n);
* int GetNumberOfNodeReferences(const char* referenceRole);
* etc.

For full API see:

http://viewvc.slicer.org/viewvc.cgi/Slicer4/trunk/Libs/MRML/Core/vtkMRMLNode.h?view=log

Currently the following MRML nodes are implemented using new API:
* vtkMRMLStorableNode
* vtkMRMLTransformableNode
* vtkMRMLDisplayableNode

Other references to MRML nodes such as to vtkMRMLColorTableNode, vtkMRMLDiffusionTensorDisplayPropertiesNode are currently not using new API.

Module parameter nodes that contain references to input/output Volume/Model, etc. nodes may or may not require a new API since not all of them contain logic to deal with reference changes.

== Examples ==
* vtkMRMLTransformableNode implementation:
http://viewvc.slicer.org/viewvc.cgi/Slicer4/trunk/Libs/MRML/Core/vtkMRMLTransformableNode.h?view=log
* vtkMRMLDisplayableNodeimplementation:
http://viewvc.slicer.org/viewvc.cgi/Slicer4/trunk/Libs/MRML/Core/vtkMRMLDisplayableNode.h?view=log
* vtkMRMLStorableNodeimplementation:
http://viewvc.slicer.org/viewvc.cgi/Slicer4/trunk/Libs/MRML/Core/vtkMRMLStorableNode.h?view=log


git-svn-id: http://svn.slicer.org/Slicer4/trunk@21810 3bd1e089-480b-0410-8dfb-8563597acbee