[flann] Fix pop_t is not defined under non-gunc platform. (#32468)

ports/flann/fix_undefined_pot_t.patch

@@ -0,0 +1,13 @@
+diff --git a/src/cpp/flann/algorithms/dist.h b/src/cpp/flann/algorithms/dist.h
+index 4e6eb73..bbcdda1 100644
+--- a/src/cpp/flann/algorithms/dist.h
++++ b/src/cpp/flann/algorithms/dist.h
+@@ -519,7 +519,7 @@ struct HammingPopcnt
+ #else
+         HammingLUT lut;
+         result = lut(reinterpret_cast<const unsigned char*> (a),
+-                     reinterpret_cast<const unsigned char*> (b), size * sizeof(pop_t));
++                     reinterpret_cast<const unsigned char*> (b), size);
+ #endif
+         return result;
+     }

ports/flann/portfile.cmake

@@ -9,6 +9,7 @@ vcpkg_from_github(
     PATCHES
         fix-build-error.patch
         fix-dependency-hdf5.patch
+        fix_undefined_pot_t.patch # https://github.com/opencv/opencv/pull/13270/
 )
 
 vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
@@ -37,6 +38,6 @@ vcpkg_cmake_config_fixup(CONFIG_PATH lib/cmake/${PORT})
 file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
 
 # Handle copyright
-file(INSTALL ${SOURCE_PATH}/COPYING DESTINATION ${CURRENT_PACKAGES_DIR}/share/flann RENAME copyright)
+vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/COPYING")
 
 vcpkg_fixup_pkgconfig()

ports/flann/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "flann",
   "version-date": "2019-04-07",
-  "port-version": 6,
+  "port-version": 7,
   "description": "Fast Library for Approximate Nearest Neighbors",
   "homepage": "https://github.com/mariusmuja/flann",
   "license": "BSD-3-Clause",

versions/baseline.json

@@ -2518,7 +2518,7 @@
     },
     "flann": {
       "baseline": "2019-04-07",
-      "port-version": 6
+      "port-version": 7
     },
     "flash-runtime-extensions": {
       "baseline": "2.4",

versions/f-/flann.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "827bba7345ec924adeee28bacb5b0a79f705920d",
+      "version-date": "2019-04-07",
+      "port-version": 7
+    },
     {
       "git-tree": "300415ad416640a5b4a4f0895a3250b306726181",
       "version-date": "2019-04-07",