Bug 21724: Make Firefox and Tor Browser distinct macOS apps

When macOS opens a document or selects a default browser, it sometimes
uses the CFBundleSignature. Changing from the Firefox MOZB signature to
a different signature TORB allows macOS to distinguish between Firefox
and Tor Browser.

browser/app/Makefile.in

@@ -104,5 +104,5 @@ ifdef MOZ_UPDATER
 	mv -f '$(dist_dest)/Contents/MacOS/updater.app/Contents/MacOS/org.mozilla.updater' '$(dist_dest)/Contents/Library/LaunchServices'
 	ln -s ../../../../Library/LaunchServices/org.mozilla.updater '$(dist_dest)/Contents/MacOS/updater.app/Contents/MacOS/org.mozilla.updater'
 endif
-	printf APPLMOZB > '$(dist_dest)/Contents/PkgInfo'
+	printf APPLTORB > '$(dist_dest)/Contents/PkgInfo'
 endif

browser/app/macbuild/Contents/Info.plist.in

@@ -179,7 +179,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>%APP_VERSION%</string>
 	<key>CFBundleSignature</key>
-	<string>MOZB</string>
+	<string>TORB</string>
 	<key>CFBundleURLTypes</key>
 	<array>
 		<dict>