[gnome-builder] meson.build: Add missing source files and headers

[Christian Hergert <chergert src gnome org>]

commit ca6672e90a19feaa4d29db1fccc2943f88a4f038
Author: Krzesimir Nowak <krzesimir kinvolk io>
Date:   Fri Mar 24 15:54:06 2017 +0100

    meson.build: Add missing source files and headers
    
    Without them, flatpak and autotools plugins failed to load.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780503

 libide/meson.build            |    2 ++
 plugins/autotools/meson.build |    2 ++
 plugins/flatpak/meson.build   |    4 ++++
 3 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/libide/meson.build b/libide/meson.build
index 2326011..c1c11c1 100644
--- a/libide/meson.build
+++ b/libide/meson.build
@@ -164,6 +164,7 @@ libide_public_headers = [
   'template/ide-template-base.h',
   'template/ide-template-provider.h',
   'threading/ide-thread-pool.h',
+  'transfers/ide-pkcon-transfer.h',
   'transfers/ide-transfer-manager.h',
   'transfers/ide-transfer-row.h',
   'transfers/ide-transfer.h',
@@ -375,6 +376,7 @@ libide_public_sources = [
   'template/ide-template-base.c',
   'template/ide-template-provider.c',
   'threading/ide-thread-pool.c',
+  'transfers/ide-pkcon-transfer.c',
   'transfers/ide-transfer-manager.c',
   'transfers/ide-transfer-row.c',
   'transfers/ide-transfer.c',
diff --git a/plugins/autotools/meson.build b/plugins/autotools/meson.build
index e258ceb..3c3eb2d 100644
--- a/plugins/autotools/meson.build
+++ b/plugins/autotools/meson.build
@@ -10,6 +10,8 @@ autotools_sources = [
   'ide-autotools-build-system.h',
   'ide-autotools-build-target.c',
   'ide-autotools-build-target.h',
+  'ide-autotools-make-stage.c',
+  'ide-autotools-make-stage.h',
   'ide-autotools-makecache-stage.c',
   'ide-autotools-makecache-stage.h',
   'ide-autotools-pipeline-addin.c',
diff --git a/plugins/flatpak/meson.build b/plugins/flatpak/meson.build
index cd6af10..226bccc 100644
--- a/plugins/flatpak/meson.build
+++ b/plugins/flatpak/meson.build
@@ -10,6 +10,8 @@ flatpak_sources = [
   flatpak_res,
   'gbp-flatpak-application-addin.c',
   'gbp-flatpak-application-addin.h',
+  'gbp-flatpak-build-system-discovery.c',
+  'gbp-flatpak-build-system-discovery.h',
   'gbp-flatpak-clone-widget.c',
   'gbp-flatpak-clone-widget.h',
   'gbp-flatpak-configuration.c',
@@ -37,6 +39,8 @@ flatpak_sources = [
   'gbp-flatpak-transfer.h',
   'gbp-flatpak-util.c',
   'gbp-flatpak-util.h',
+  'gbp-flatpak-workbench-addin.c',
+  'gbp-flatpak-workbench-addin.h',
 ]