Draft: move circular, ortho, and polar make functions

Previously they were in `draftobjects`, but since they
don't define new objects, just create objects,
they are moved to `draftmake`.

Also ajust the `CMakeLists.txt` and the corresponding Gui Commands
which use these make functions.

These functions internally use the `Draft.makeArray` function.
We will put comments as reminders so that when this function
is moved to its own module, we can update the derived functions.

src/Mod/Draft/draftmake/make_polararray.py

@@ -0,0 +1,114 @@
+# ***************************************************************************
+# *   (c) 2019 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de>           *
+# *                                                                         *
+# *   This file is part of the FreeCAD CAx development system.              *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   FreeCAD is distributed in the hope that it will be useful,            *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with FreeCAD; if not, write to the Free Software        *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+"""Provides functions for creating polar arrays in a plane."""
+## @package make_polararray
+# \ingroup DRAFT
+# \brief Provides functions for creating polar arrays in a plane.
+
+import FreeCAD as App
+import Draft
+# import draftmake.make_array as make_array
+import draftutils.utils as utils
+from draftutils.messages import _msg, _err
+from draftutils.translate import _tr
+
+
+def make_polar_array(obj,
+                     number=4, angle=360, center=App.Vector(0, 0, 0),
+                     use_link=True):
+    """Create a polar array from the given object.
+
+    Parameters
+    ----------
+    obj: Part::Feature
+        Any type of object that has a `Part::TopoShape`
+        that can be duplicated.
+        This means most 2D and 3D objects produced
+        with any workbench.
+
+    number: int, optional
+        It defaults to 4.
+        The number of copies produced in the circular pattern.
+
+    angle: float, optional
+        It defaults to 360.
+        The magnitude in degrees swept by the polar pattern.
+
+    center: Base::Vector3, optional
+        It defaults to the origin `App.Vector(0, 0, 0)`.
+        The vector indicating the center of rotation of the array.
+
+    use_link: bool, optional
+        It defaults to `True`.
+        If it is `True` the produced copies are not `Part::TopoShape` copies,
+        but rather `App::Link` objects.
+        The Links repeat the shape of the original `obj` exactly,
+        and therefore the resulting array is more memory efficient.
+
+        Also, when `use_link` is `True`, the `Fuse` property
+        of the resulting array does not work; the array doesn't
+        contain separate shapes, it only has the original shape repeated
+        many times, so there is nothing to fuse together.
+
+        If `use_link` is `False` the original shape is copied many times.
+        In this case the `Fuse` property is able to fuse
+        all copies into a single object, if they touch each other.
+
+    Returns
+    -------
+    Part::FeaturePython
+        A scripted object with `Proxy.Type='Array'`.
+        Its `Shape` is a compound of the copies of the original object.
+    """
+    _name = "make_polar_array"
+    utils.print_header(_name, _tr("Polar array"))
+
+    _msg("Number: {}".format(number))
+    _msg("Angle: {}".format(angle))
+    _msg("Center: {}".format(center))
+
+    try:
+        utils.type_check([(number, int)], name=_name)
+    except TypeError:
+        _err(_tr("Wrong input: must be an integer number."))
+        return None
+
+    try:
+        utils.type_check([(angle, (int, float))], name=_name)
+    except TypeError:
+        _err(_tr("Wrong input: must be a number."))
+        return None
+
+    try:
+        utils.type_check([(center, App.Vector)], name=_name)
+    except TypeError:
+        _err(_tr("Wrong input: must be a vector."))
+        return None
+
+    _msg("use_link: {}".format(bool(use_link)))
+
+    # new_obj = make_array.make_array()
+    new_obj = Draft.makeArray(obj,
+                              arg1=center, arg2=angle, arg3=number,
+                              use_link=use_link)
+    return new_obj