[gnome-builder] build: make GbViewStack public

[Christian Hergert <chergert src gnome org>]

commit 949db9490928d6dcda381ad71cd5424700fefe1c
Author: Christian Hergert <christian hergert me>
Date:   Thu Sep 3 20:08:42 2015 -0700

    build: make GbViewStack public
    
    This allows plugins to find the stack to add views.

 src/Makefile.am |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 8ba0aa5..eef6118 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -23,6 +23,8 @@ libgnome_builder_public_sources = \
        util/gb-menu-extension.h \
        views/gb-view.c \
        views/gb-view.h \
+       views/gb-view-stack.c \
+       views/gb-view-stack.h \
        $(NULL)
 
 libgnome_builder_la_SOURCES = \
@@ -161,8 +163,6 @@ libgnome_builder_la_SOURCES = \
        views/gb-view-stack-actions.c \
        views/gb-view-stack-actions.h \
        views/gb-view-stack-private.h \
-       views/gb-view-stack.c \
-       views/gb-view-stack.h \
        workbench/gb-workbench-actions.c \
        workbench/gb-workbench-actions.h \
        workbench/gb-workbench-addin.c \