librecad* : fix default destructor

the default destructor is not automatically created in all cases

also allow built on darwin10 now that qt5 is available there

cad/LibreCAD/Portfile

@@ -22,6 +22,11 @@ if {${subport} eq "${name}"} {
         reinplace "s|lrelease|${qt_bins_dir}/lrelease|g" scripts/postprocess-osx.sh
     }
 
+    # the default destructor cannot be created in all cases
+    # see https://marc.info/?l=pkgsrc-changes&m=150505264620416&w=2
+    patchfiles-append   patch-librecad-add-default-destructor-rsimage.diff
+
+
 } elseif {${subport} eq "${name}-devel"} {
 
     conflicts           LibreCAD
@@ -34,10 +39,14 @@ if {${subport} eq "${name}"} {
 
     patchfiles          qt511.patch
     patch.pre_args      -p1
+
+    # the default destructor cannot be created in all cases
+    # see https://marc.info/?l=pkgsrc-changes&m=150505264620416&w=2
+    patchfiles-append   patch-librecad-devel-add-default-destructor-rsimage.diff
 }
 
 pre-fetch {
-    if {${os.platform} eq "darwin" && ${os.major} < 11} {
+    if {${os.platform} eq "darwin" && ${os.major} < 10} {
         ui_error "${name} ${version} requires an OS supporting qt5 to function."
         return -code error "incompatible OS X version"
     }

cad/LibreCAD/files/patch-librecad-add-default-destructor-rsimage.diff

@@ -0,0 +1,25 @@
+diff --git librecad/src/lib/engine/rs_image.cpp librecad/src/lib/engine/rs_image.cpp
+index 1b39cbd..3f4ea16 100644
+--- librecad/src/lib/engine/rs_image.cpp
++++ librecad/src/lib/engine/rs_image.cpp
+@@ -35,6 +35,8 @@
+ #include "rs_painterqt.h"
+ #include "rs_math.h"
+
++RS_ImageData::~RS_ImageData() = default;
++
+ RS_ImageData::RS_ImageData(int _handle,
+ 						   const RS_Vector& _insertionPoint,
+ 						   const RS_Vector& _uVector,
+diff --git librecad/src/lib/engine/rs_image.h librecad/src/lib/engine/rs_image.h
+index 12d7802..fa0f6f3 100644
+--- librecad/src/lib/engine/rs_image.h
++++ librecad/src/lib/engine/rs_image.h
+@@ -39,6 +39,7 @@ struct RS_ImageData {
+      * Default constructor. Leaves the data object uninitialized.
+      */
+ 	RS_ImageData() = default;
++	~RS_ImageData();
+
+     RS_ImageData(int handle,
+                                 const RS_Vector& insertionPoint,

cad/LibreCAD/files/patch-librecad-devel-add-default-destructor-rsimage.diff

@@ -0,0 +1,25 @@
+diff --git a/librecad/src/lib/engine/rs_image.cpp b/librecad/src/lib/engine/rs_image.cpp
+index 1b39cbd..3f4ea16 100644
+--- a/librecad/src/lib/engine/rs_image.cpp
++++ b/librecad/src/lib/engine/rs_image.cpp
+@@ -35,6 +35,8 @@
+ #include "rs_painterqt.h"
+ #include "rs_math.h"
+
++RS_ImageData::~RS_ImageData() = default;
++
+ RS_ImageData::RS_ImageData(int _handle,
+ 						   const RS_Vector& _insertionPoint,
+ 						   const RS_Vector& _uVector,
+diff --git a/librecad/src/lib/engine/rs_image.h b/librecad/src/lib/engine/rs_image.h
+index 12d7802..fa0f6f3 100644
+--- a/librecad/src/lib/engine/rs_image.h
++++ b/librecad/src/lib/engine/rs_image.h
+@@ -39,6 +39,7 @@ struct RS_ImageData {
+      * Default constructor. Leaves the data object uninitialized.
+      */
+ 	RS_ImageData() = default;
++	~RS_ImageData();
+
+     RS_ImageData(int handle,
+                                 const RS_Vector& insertionPoint,