Build: Enable SSL in mingw by linking against WinSSL

The mingw builds aren't submitting telemetry because the curl library
they are linked against is configured to use openSSL and openSSL looks
for the certificates in the users home folder. This keeps it from
contacting web services because it can't communicate over SSL.

This commit adds a download in mingw builds that will download a
precompiled curl for mingw linked against winssl and sspi.

appveyor.yml

@@ -44,7 +44,7 @@ before_build:
           # redirect stderr and change the exit code to prevent powershell from cancelling the build if cmake prints a warning
           cmd /C 'cmake -G "Visual Studio 15 2017 Win64" -DCITRA_USE_BUNDLED_QT=1 -DCITRA_USE_BUNDLED_SDL2=1 -DCMAKE_USE_OPENSSL=0 .. 2>&1 && exit 0'
         } else {
-          C:\msys64\usr\bin\bash.exe -lc "cmake -G 'MSYS Makefiles' -DUSE_SYSTEM_CURL=1 -DCMAKE_BUILD_TYPE=Release .. 2>&1"
+          C:\msys64\usr\bin\bash.exe -lc "cmake -G 'MSYS Makefiles' -DUSE_SYSTEM_CURL=1 -DCITRA_USE_BUNDLED_CURL=1 -DCMAKE_BUILD_TYPE=Release .. 2>&1"
         }
   - cd ..
 
@@ -112,9 +112,10 @@ after_build:
 
           # copy the compiled binaries and other release files to the release folder
           Get-ChildItem "$CMAKE_BINARY_DIR" -Recurse -Filter "citra*.exe" | Copy-Item -destination $RELEASE_DIST
+          # copy the libcurl dll
+          Get-ChildItem "$CMAKE_BINARY_DIR" -Recurse -Filter "libcurl.dll" | Copy-Item -destination $RELEASE_DIST
           Copy-Item -path "$CMAKE_SOURCE_DIR/license.txt" -destination $RELEASE_DIST
           Copy-Item -path "$CMAKE_SOURCE_DIR/README.md" -destination $RELEASE_DIST
-
           # copy all the dll dependencies to the release folder
           # hardcoded list because we don't build static and determining the list of dlls from the binary is a pain.
           $MingwDLLs = "Qt5Core.dll","Qt5Widgets.dll","Qt5Gui.dll","Qt5OpenGL.dll",
@@ -123,11 +124,7 @@ after_build:
                        "libfreetype-*.dll","libglib-*.dll","libgobject-*.dll","libgraphite2.dll","libiconv-*.dll",
                        "libharfbuzz-*.dll","libintl-*.dll","libpcre-*.dll","libpcre16-*.dll","libpng16-*.dll",
                        # Runtime/Other dependencies
-                       "libgcc_s_seh-*.dll","libstdc++-*.dll","libwinpthread-*.dll","SDL2.dll","zlib1.dll",
-                       # curl dependencies
-                       "libcurl-*.dll","libnghttp2-*.dll","libeay32.dll","libgmp-*.dll","librtmp-*.dll",
-                       "libgnutls-*.dll","libhogweed-*.dll","libnettle-*.dll","libssh2-*.dll",
-                       "ssleay32.dll","libidn-*.dll","libp11-kit-*.dll","libtasn1-*.dll","libunistring-*.dll"
+                       "libgcc_s_seh-*.dll","libstdc++-*.dll","libwinpthread-*.dll","SDL2.dll","zlib1.dll"
           foreach ($file in $MingwDLLs) {
             Copy-Item -path "C:/msys64/mingw64/bin/$file" -force -destination "$RELEASE_DIST"
           }