(cad/openscad) Updated 2015.03-3 to 2019.05 (Re: PR pkg/54302)

# OpenSCAD 2019.05

**Language Features:**

* New modules
    * assert() - stop script evaluation on failed constraints
    * let() - scoped assignment
* New functions
    * ord() - convert from character to Unicode code point
    * echo()
    * assert() - stop script evaluation on failed constraints
    * Type testing functions: is_undef(), is_list(), is_num(), is_bool(), is_string()
* New special variable: $preview variable which is set to true in preview mode
* List comprehension updates
   * Added if/else condition
   * Added each keyword
   * Added C-style for loop
   * Now allows looping over characters of a string
* rotate_extrude(): Added angle parameter to
* import() now supports SVG, 3MF and AMF
* color() now supports hex color codes
* Removed glide() and subdiv() which were never implemented

**Program Features:**

* Customizer: Allow parametrizing design parameters with GUI customization
* Support for using 3D-Mouse / Joystick / Gamepad input devices for controlling the 3D view
* 3D Printing support: Purchase from a print service partner or print to Octoprint
* New export file formats: SVG, 3MF, AMF
* Quick-edit and preview of values using Alt-Arrows (Shift-Alt-Arrows on macOS)
* Added --view cmd-line parameter
* Play sound notification on render complete
* Line numbers and filenames are now shown for many errors and warnings
* Hardwarning preference: Stop on first warning
* Hardwarning and assert now shows a stack trace
* New warnings
    * Module call parameterns don't match module declaration
    * Argument value of of range
    * Duplicate passed argument
    * Children passed to module not accepting children
    * Reference to inknown $special_variables
    * Duplicate assigment
* New translations: Ukrainian, Polish


(mef)

$NetBSD: patch-features_qscintilla2-priv.prf,v 1.1 2019/06/22 12:57:50 mef Exp $

To avoid following problem
-------
 ....
QtMultimedia -lQtOpenGL -lQtGui -lQtNetwork -lQtCore -lGLU -lGL -lXmu -lX11
ld: cannot find -lqscintilla2_qt4
*** [openscad] Error code 1
-------

--- features/qscintilla2-priv.prf.orig	2019-05-10 14:03:44.000000000 +0900
+++ features/qscintilla2-priv.prf	2019-05-28 21:34:58.087656036 +0900
@@ -23,5 +23,5 @@ CONFIG(debug, debug|release) {
         }
     }
 } else {
-    LIBS += -lqscintilla2_qt$${QT_MAJOR_VERSION}
+    LIBS += -lqscintilla2
 }