Remove empty build command and set install command empty. Thus is cannot happen
that the dcmtk libraries are installed to some unintended location.
Setting dcmtk_dir to dcmtk-build directory
Merge pull request #514 from AndreasFetzer/fix-dcmtk-build-on-mac

Fix DCMTK build on mac
fixed crashing line in ctkFileDialog for Qt5.
improved in-code description of previous ctkFileDialog crash fix
Merge pull request #516 from SINTEFMedisinskTeknologi/master

Fixed crashing line in ctkFileDialog for Mac/Qt5
Fixed broken doxygen generation for Plugin Framework

In some of the header files in the plugin framework, the two macros

  Q_DECLARE_PRIVATE(ctkPlugin)
  Q_DISABLE_COPY(ctkPlugin)

appeared at the beginning of the class declaration. This is valid c++,
but the doxygen generator intrepret this as a private statement and
thus all subsequent public method declarations are interpreted as private,
thus hiding them from the user documentation.

We have no idea why doxygen does this.

Investigation was done in cooperation with @jcfr.

Fix: Moved the offending macros to the end of the class declaration.
Removed custom QT5_INSTALL_PREFIX variable.

We now use the recommended approach of using CMAKE_PREFIX_PATH
for pointing to Qt5 installations. Passing this variable to
all external projects is a good idea any way (not just for Qt5).

Fixes #478.
Merge branch '478-use-cmake-prefix-path-instead-of-qt5-install-prefix'

* 478-use-cmake-prefix-path-instead-of-qt5-install-prefix:
  Removed custom QT5_INSTALL_PREFIX variable.
Merge remote-tracking branch 'upstream/master'
set doxygen variable ensuring macro definitions of type MY_FOO(arg) dont mess up doc generation
Merge pull request #517 from SINTEFMedisinskTeknologi/master

Fix broken doxygen generation of Plugin Framework