Bug 31457: disable per-installation profiles

The dedicated profiles (per-installation) feature does not interact
well with our bundled profiles on Linux and Windows, and it also causes
multiple profiles to be created on macOS under TorBrowser-Data.

browser/moz.configure

@@ -7,7 +7,7 @@
 imply_option('MOZ_PLACES', True)
 imply_option('MOZ_SERVICES_HEALTHREPORT', True)
 imply_option('MOZ_SERVICES_SYNC', True)
-imply_option('MOZ_DEDICATED_PROFILES', True)
+imply_option('MOZ_DEDICATED_PROFILES', False)
 imply_option('MOZ_BLOCK_PROFILE_DOWNGRADE', True)
 
 with only_when(target_is_linux & compile_environment):