chore(dev): update source code layout in intro (#864)

dev/intro.rst

@@ -48,38 +48,38 @@ for the build system. The actual code lives in the ``cmd/syncthing`` and
 assets/
    Various graphical assets -- the logo.
 
+bin/
+   Compiled packages, generated by the build process.
+
 cmd/
    Commands either built as end products or used by the build process itself.
 
-   genassets/
-      Generates asset files that are compiled into ``syncthing`` as part of the build process (build utility).
+   stdiscosrv/
+      Global discovery server for the Syncthing project.
 
-   stcompdirs/
-      Compares two directories (debugging utility).
+   strelaysrv/
+      Relay server for the Syncthing project.
 
-   stevents/
-      Displays event trace from a remote ``syncthing`` using the API (debugging utility).
+   syncthing/
+      Synchronizes files between devices...
 
-   stfileinfo/
-      Shows information about a file, in the same manner ``syncthing`` would see it (debugging utility).
+   dev/
+      Development related utilities.
 
-   stfinddevice/
-      Looks up a device on a global discovery server (debugging utility).
+      stcompdirs/
+         Compares two directories (debugging utility).
 
-   stindex/
-      Prints index (database) contents (debugging utility).
+      stevents/
+         Displays event trace from a remote ``syncthing`` using the API (debugging utility).
 
-   syncthing/
-      Synchronizes files between devices...
+      stfileinfo/
+         Shows information about a file, in the same manner ``syncthing`` would see it (debugging utility).
 
-   todos/
-      Converts line endings from Unix to DOS standard (build utility).
+      stfinddevice/
+         Looks up a device on a global discovery server (debugging utility).
 
-   transifexdl/
-      Downloads translations from Transifex (build utility).
-
-   translate/
-      Generates translation source for Transifex based on the HTML source (build utility).
+   infra/
+      Infrastructure related utilities.
 
 etc/
    Startup scripts and integration files. Included as-is in the release packages.
@@ -90,9 +90,6 @@ gui/
 lib/
    Contains all packages that make up the parts of ``syncthing``.
 
-   auto/
-      Auto generated asset data, created by ``genassets`` based on the contents of the ``gui`` directory.
-
    beacon/
       Multicast and broadcast UDP beacons. Used by the local discovery system.
 
@@ -108,9 +105,6 @@ lib/
    events/
       The event subsystem, handles emitting of and subscribing to events across the other packages.
 
-   fnmatch/
-      Matches strings to glob patterns, used by the ignore package.
-
    ignore/
       Parses the ``.stignore`` file and matches it against file paths.
 
@@ -120,21 +114,18 @@ lib/
    osutil/
       Abstracts away certain OS specific quirks.
 
-   rc/
-      Remote controls a Syncthing process over the REST API.
-
    protocol/
       Implementation of the BEP protocol.
 
+   rc/
+      Remote controls a Syncthing process over the REST API.
+
    scanner/
       Looks for changes to files and hashes them as appropriate.
 
    stats/
       Records statistics about devices and folders.
 
-   symlinks/
-      Handles symlinks in a platform independent manner.
-
    sync/
       Provides optional debugging on top of the regular Mutex / RWMutex primitives.
 
@@ -150,15 +141,18 @@ lib/
 man/
    Manual pages, generated from the documentation.
 
-pkg/
-   Compiled packages, generated by the build process.
-
-protocol/
-   Legacy location of the protocol package.
-
 script/
    Various utility scripts for auto generating stuff and so on.
 
+   genassets/
+      Generates asset files that are compiled into ``syncthing`` as part of the build process (build utility).
+
+   transifexdl/
+      Downloads translations from Transifex (build utility).
+
+   translate/
+      Generates translation source for Transifex based on the HTML source (build utility).
+
 test/
    The integration test suite.