Upgraded external libraries in Windows build environment

- cmake-3.19.0
- opencv-4.5.0
- openssl-1.1.1h

build_scripts/Windows/build-libs/Makefile

@@ -1,10 +1,10 @@
 ZLIB_VERSION=1.2.3
 BZIP2_VERSION=1.0.6
 MINIUPNPC_VERSION=2.0
-OPENSSL_VERSION=1.1.1g
+OPENSSL_VERSION=1.1.1h
 SPEEX_VERSION=1.2.0
 SPEEXDSP_VERSION=1.2rc3
-OPENCV_VERSION=3.4.11
+OPENCV_VERSION=4.5.0
 LIBXML2_VERSION=2.9.7
 LIBXSLT_VERSION=1.1.32
 CURL_VERSION=7.58.0

build_scripts/Windows/env/tools/prepare-msys2.bat

@@ -27,8 +27,8 @@ if exist "%EnvMSYS2Path%\msys%MSYS2Base%\usr\bin\pacman.exe" (
 
 set MSYS2Install=msys2-base-%MSYS2Architecture%-20190524.tar.xz
 set MSYS2Url=http://sourceforge.net/projects/msys2/files/Base/%MSYS2Architecture%/%MSYS2Install%/download
-set CMakeInstall=cmake-3.1.0-win32-x86.zip
-set CMakeUrl=http://www.cmake.org/files/v3.1/%CMakeInstall%
+set CMakeInstall=cmake-3.19.0-win32-x86.zip
+set CMakeUrl=https://github.com/Kitware/CMake/releases/download/v3.19.0/%CMakeInstall%
 set CMakeUnpackPath=%EnvMSYS2Path%\msys%MSYS2Base%
 
 if exist "%EnvMSYS2Path%\msys%MSYS2Base%" (

build_scripts/Windows/env/tools/prepare-tools.bat

@@ -16,9 +16,9 @@ set NSISInstallPath=%EnvToolsPath%\NSIS
 set MinGitInstall=MinGit-2.28.0-32-bit.zip
 set MinGitUrl=https://github.com/git-for-windows/git/releases/download/v2.28.0.windows.1/%MinGitInstall%
 set MinGitInstallPath=%EnvToolsPath%\MinGit
-set CMakeVersion=cmake-3.1.0-win32-x86
+set CMakeVersion=cmake-3.19.0-win32-x86
 set CMakeInstall=%CMakeVersion%.zip
-set CMakeUrl=http://www.cmake.org/files/v3.1/%CMakeInstall%
+set CMakeUrl=https://github.com/Kitware/CMake/releases/download/v3.19.0/%CMakeInstall%
 set CMakeInstallPath=%EnvToolsPath%\cmake
 set TorProjectUrl=https://www.torproject.org
 set TorDownloadIndexUrl=%TorProjectUrl%/download/tor