Switch back to low resolution mode on macOS

This is a revert of 6c0181c. Testing showed that we got a big
performance hit by enabling this, and we also saw some graphical
artifacts. More work is needed before this can be enabled by default.

release/Info.plist.in

@@ -7,7 +7,7 @@
 	<key>CFBundleExecutable</key>
 	<string>TigerVNC Viewer</string>
 	<key>NSHighResolutionCapable</key>
-	<string>True</string>
+	<string>False</string>
 	<key>CFBundleGetInfoString</key>
 	<string>@VERSION@, Copyright © 1998-2011 [many holders]</string>
 	<key>CFBundleIconFile</key>