BUG: patch for png and freetype detection

SuperBuild/patches/QT5/qt5-2-png-freetype-detection-all.diff

+diff -burN  qt-everywhere-src-5.14.1_orig/qtbase/src/gui/configure.json qt-everywhere-src-5.14.1/qtbase/src/gui/configure.json--- qt-everywhere-src-5.14.1_orig/qtbase/src/gui/configure.json   2020-07-27 18:13:35.779000908 +0200
++++ qt-everywhere-src-5.14.1/qtbase/src/gui/configure.json  2020-07-27 18:18:11.226987484 +0200
+@@ -239,10 +239,10 @@
+             },
+             "headers": "ft2build.h",
+             "sources": [
+-                { "type": "pkgConfig", "args": "freetype2" },
+                 { "type": "freetype", "libs": "-lfreetype", "condition": "!config.wasm" },
+                 { "libs": "-s USE_FREETYPE=1", "condition": "config.wasm" },
+-                { "libs": "-lfreetype" }
++                { "libs": "-lfreetype" },
++                { "type": "pkgConfig", "args": "freetype2" }
+             ],
+             "use": [
+                 { "lib": "zlib", "condition": "features.system-zlib" }
+@@ -397,12 +397,12 @@
+             },
+             "headers": "png.h",
+             "sources": [
+-                { "type": "pkgConfig", "args": "libpng" },
+                 { "libs": "-llibpng16", "condition": "config.msvc" },
+                 { "libs": "-llibpng", "condition": "config.msvc" },
+                 { "libs": "-lpng16", "condition": "!config.msvc" },
+                 { "libs": "-lpng", "condition": "!config.msvc" },
+-                { "libs": "-s USE_LIBPNG=1", "condition": "config.wasm" }
++                { "libs": "-s USE_LIBPNG=1", "condition": "config.wasm" },
++                { "type": "pkgConfig", "args": "libpng" }
+             ],
+             "use": [
+                 { "lib": "zlib", "condition": "features.system-zlib" }