[gnome-build-meta] Add some hints regarding how to edit gnome-build-meta

[Michael Catanzaro <mcatanzaro src gnome org>]

commit b8d69355a73d94d3f1d2524df2f0b50f62be62eb
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Mon Apr 16 11:38:31 2018 -0500

    Add some hints regarding how to edit gnome-build-meta

 elements/core-deps.bst                        | 4 ++++
 elements/core.bst                             | 3 +++
 elements/core/meta-gnome-core-os-services.bst | 3 +++
 elements/world.bst                            | 4 ++++
 4 files changed, 14 insertions(+)
---
diff --git a/elements/core-deps.bst b/elements/core-deps.bst
index 271bacf..5d23f21 100644
--- a/elements/core-deps.bst
+++ b/elements/core-deps.bst
@@ -1,3 +1,7 @@
+# Elements listed here must be a dependency of something in GNOME core.
+# Feel free to add anything here that's needed by a core module. You
+# can even include modules that are present in the base system (the
+# freedesktop-sdk) if newer versions are required.
 kind: stack
 depends:
 - core-deps/ModemManager.bst
diff --git a/elements/core.bst b/elements/core.bst
index a5284f4..b32b8e7 100644
--- a/elements/core.bst
+++ b/elements/core.bst
@@ -1,3 +1,6 @@
+# The core set is not expected to change as frequently as core-deps or
+# world. Adding or removing elements from here should be approved by
+# release team. Current contacts: Michael Catanzaro or Javier Jardon.
 kind: stack
 depends:
 - core/meta-gnome-core-os-services.bst
diff --git a/elements/core/meta-gnome-core-os-services.bst b/elements/core/meta-gnome-core-os-services.bst
index 570bb6a..73517df 100644
--- a/elements/core/meta-gnome-core-os-services.bst
+++ b/elements/core/meta-gnome-core-os-services.bst
@@ -1,3 +1,6 @@
+# The core set is not expected to change as frequently as core-deps or
+# world. Adding or removing elements from here should be approved by
+# release team. Current contacts: Michael Catanzaro or Javier Jardon.
 kind: stack
 depends:
 - core-deps/NetworkManager.bst
diff --git a/elements/world.bst b/elements/world.bst
index a02835d..06d8706 100644
--- a/elements/world.bst
+++ b/elements/world.bst
@@ -1,3 +1,7 @@
+# Feel free to add anything you want to world, as long as it's vaguely
+# GNOME-related. Any needed dependencies should be added here, in world,
+# as well. world does not receive continuous integration testing, and it
+# is not released by the GNOME release team.
 kind: stack
 depends:
 - world/accerciser.bst