macOS: add XCode and SDK buildversions to Info.plist

without those submitting a build for external testing via testflight is
not possible because appstore thinks you were using a beta version of XCode

Change-Id: I6979a9d290c3e67dd9969d6e535625760b639c25
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/141496
Tested-by: Jenkins
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>

configure.ac

@@ -3428,7 +3428,7 @@ if test $_os = Darwin; then
     fi
 
     AC_MSG_RESULT([macOS SDK $macosx_sdk at $MACOSX_SDK_PATH])
-
+    MACOSX_SDK_BUILD_VERSION=$(xcodebuild -version -sdk "$MACOSX_SDK_PATH" ProductBuildVersion) 
     case $macosx_sdk in
     10.13)
         MACOSX_SDK_VERSION=101300
@@ -3491,6 +3491,9 @@ if test $_os = Darwin; then
         AC_MSG_ERROR(["$my_xcode_ver1" is too old or unrecognized, must be at least Xcode 12.5])
     fi
 
+    my_xcode_ver1=$(xcrun xcodebuild -version | tail -n 1)
+    MACOSX_XCODE_BUILD_VERSION=${my_xcode_ver1#Build version }
+
     case "$with_macosx_version_min_required" in
     10.14)
         MAC_OS_X_VERSION_MIN_REQUIRED="101400"
@@ -3661,6 +3664,8 @@ AC_SUBST(ENABLE_MACOSX_SANDBOX)
 AC_SUBST(MACOSX_BUNDLE_IDENTIFIER)
 AC_SUBST(MACOSX_PROVISIONING_INFO)
 AC_SUBST(MACOSX_PROVISIONING_PROFILE)
+AC_SUBST(MACOSX_SDK_BUILD_VERSION)
+AC_SUBST(MACOSX_XCODE_BUILD_VERSION)
 
 dnl ===================================================================
 dnl Check iOS SDK and compiler

sysui/desktop/macosx/Info.plist.in

@@ -1961,6 +1961,10 @@
     <true/>
     <key>NSContactsUsageDescription</key>
     <string>You can add your contacts as a data source for mail merge or similar operations.</string>
+    <key>DTXcodeBuild</key>
+    <string>@MACOSX_XCODE_BUILD_VERSION@</string>
+    <key>DTSDKBuild</key>
+    <string>@MACOSX_SDK_BUILD_VERSION@</string>
 </dict>
 </plist>
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