[darknet] update to v2020-08-30 (#13238)

ports/darknet/CONTROL

@@ -1,7 +1,7 @@
 Source: darknet
-Version: 2020-06-29
+Version: 2020-08-30
 Description: Darknet is an open source neural network framework written in C and CUDA. You only look once (YOLO) is a state-of-the-art, real-time object detection system, best example of darknet functionalities.
-Build-Depends: pthreads (windows), stb
+Build-Depends: pthreads, stb
 
 Feature: cuda
 Build-Depends: cuda

ports/darknet/fix_shared_static.patch

@@ -1,20 +0,0 @@
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -1,4 +1,4 @@
--cmake_minimum_required(VERSION 3.12)
-+cmake_minimum_required(VERSION 3.17)
- 
- set(Darknet_MAJOR_VERSION 0)
- set(Darknet_MINOR_VERSION 2)
-@@ -77,6 +77,11 @@ if(CMAKE_CUDA_COMPILER AND ENABLE_CUDA)
-     else()
-       message(STATUS "Your setup supports half precision (it requires CC >= 7.0)")
-     endif()
-+  endif()
-+  if(BUILD_SHARED_LIBS)
-+    set(CMAKE_CUDA_RUNTIME_LIBRARY "Shared")
-+  else()
-+    set(CMAKE_CUDA_RUNTIME_LIBRARY "Static")
-   endif()
- else()
-   set(ENABLE_CUDA "FALSE" CACHE BOOL "Enable CUDA support" FORCE)

ports/darknet/portfile.cmake

@@ -1,11 +1,9 @@
 vcpkg_from_github(
   OUT_SOURCE_PATH SOURCE_PATH
   REPO AlexeyAB/darknet
-  REF 320e6fd8d29f6f7825ef668f15f955f90131f782
-  SHA512 f95ac04c1c4e1b3f28aa835a64d969ffee064a3681a7966b255981722d562aa1eb91c30a378cad2f1bccd4581b74d8c2ec641c57763bc0fa97bfce8b1c222480
+  REF ecad770071eb776208a46977347e6d2410d4f50e
+  SHA512 1de0dc3f4842c68f5c12addf100996f7176ffb50dcd89a0b57446ba996d9199e31531f64c32eedbc2ea6a449459573811444dd35f1a50ece3880f58717c795ab
   HEAD_REF master
-  PATCHES
-      fix_shared_static.patch
 )
 
 # enable CUDA inside DARKNET