Convert to non-decimal build numbers.

first three digits were redundant anyway. Now it's less likely to mess
up the build version, and yet easier to recover if you do.

// FREEBIE

Signal/Signal-Info.plist

@@ -38,7 +38,7 @@
 		</dict>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>2.6.4.oops.i.mean.3.14</string>
+	<string>26315</string>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>LOGS_EMAIL</key>