Better premake support for Visual Studio

* Add a "windows_runtime=dynamic_release" option for Unreal
* Enable parallel building

Diffs=
66d9f1725 Better premake support for Visual Studio (#7779)

Co-authored-by: Chris Dalton <99840794+csmartdalton@users.noreply.github.com>

.rive_head

diff --git a/.rive_head b/.rive_head
index 5ee0753..2f45f73 100644
--- a/.rive_head
+++ b/.rive_head
@@ -1 +1 @@
-f0da6a7a097a782df5839390097254bbfb8d9a00
+66d9f1725eca90876a29f029de002b2a4f919a19

build/build_rive.sh

diff --git a/build/build_rive.sh b/build/build_rive.sh
index 9bef073..b3c4f87 100755
--- a/build/build_rive.sh
+++ b/build/build_rive.sh
@@ -286,8 +286,8 @@
         for TARGET in $@; do
             MSVC_TARGETS="$MSVC_TARGETS -t:$TARGET"
         done
-        echo msbuild.exe "./$RIVE_OUT/rive.sln" -p:UseMultiToolTask=true -m:$NUM_CORES $MSVC_TARGETS
-        msbuild.exe "./$RIVE_OUT/rive.sln" -p:UseMultiToolTask=true -m:$NUM_CORES $MSVC_TARGETS
+        echo msbuild.exe "./$RIVE_OUT/rive.sln" $MSVC_TARGETS
+        msbuild.exe "./$RIVE_OUT/rive.sln" $MSVC_TARGETS
         ;;
     *)
         echo "Unsupported buildsystem $RIVE_BUILD_SYSTEM"

build/rive_build_config.lua

diff --git a/build/rive_build_config.lua b/build/rive_build_config.lua
index cfac708..55ebd5c 100644
--- a/build/rive_build_config.lua
+++ b/build/rive_build_config.lua
@@ -158,6 +158,7 @@
         { 'static', 'Use static runtime' },
         { 'dynamic', 'Use dynamic runtime' },
         { 'dynamic_debug', 'Use dynamic runtime force debug' },
+        { 'dynamic_release', 'Use dynamic runtime force release' },
     },
     default = 'default',
 })
@@ -196,6 +197,12 @@
     runtime('Debug')
 end
 
+filter({ 'system:windows', 'options:windows_runtime=dynamic_release' })
+do
+    staticruntime('off')
+    runtime('Release')
+end
+
 filter('system:windows')
 do
     architecture('x64')
@@ -285,6 +292,11 @@
     })
 end
 
+filter({ 'action:vs2022' })
+do
+    flags({ 'MultiProcessorCompile' })
+end
+
 filter({})
 
 -- Don't use filter() here because we don't want to generate the "android_ndk" toolset if not