[gtk+] demos: Fix 'make install'

[Chun-wei Fan <fanchunwei src gnome org>]

commit 306fd15c344bbf86dae21935be255677acb7b488
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Oct 26 18:28:50 2016 +0800

    demos: Fix 'make install'
    
    We need to change gtk-update-icon-cache to gtk4-update-icon-cache, as that tool
    has been renamed.

 demos/gtk-demo/Makefile.am       |    2 +-
 demos/widget-factory/Makefile.am |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/gtk-demo/Makefile.am b/demos/gtk-demo/Makefile.am
index beb88a8..4e55169 100644
--- a/demos/gtk-demo/Makefile.am
+++ b/demos/gtk-demo/Makefile.am
@@ -169,7 +169,7 @@ dist_appsicon32_DATA = data/32x32/gtk4-demo.png data/32x32/gtk4-demo-symbolic.sy
 dist_appsicon48_DATA = data/48x48/gtk4-demo.png data/48x48/gtk4-demo-symbolic.symbolic.png
 dist_appsicon256_DATA = data/256x256/gtk4-demo.png data/256x256/gtk4-demo-symbolic.symbolic.png
 
-update_icon_cache = $(top_builddir)/gtk/gtk-update-icon-cache$(EXEEXT) --ignore-theme-index --force
+update_icon_cache = $(top_builddir)/gtk/gtk4-update-icon-cache$(EXEEXT) --ignore-theme-index --force
 
 install-data-hook: install-update-icon-cache
 uninstall-hook: uninstall-update-icon-cache
diff --git a/demos/widget-factory/Makefile.am b/demos/widget-factory/Makefile.am
index bc94f9b..3e8e6d2 100644
--- a/demos/widget-factory/Makefile.am
+++ b/demos/widget-factory/Makefile.am
@@ -47,7 +47,7 @@ dist_appsicon32_DATA = data/32x32/gtk4-widget-factory.png data/32x32/gtk4-widget
 dist_appsicon48_DATA = data/48x48/gtk4-widget-factory.png 
data/48x48/gtk4-widget-factory-symbolic.symbolic.png
 dist_appsicon256_DATA = data/256x256/gtk4-widget-factory.png 
data/256x256/gtk4-widget-factory-symbolic.symbolic.png
 
-update_icon_cache = $(top_builddir)/gtk/gtk-update-icon-cache$(EXEEXT) --ignore-theme-index --force
+update_icon_cache = $(top_builddir)/gtk/gtk4-update-icon-cache$(EXEEXT) --ignore-theme-index --force
 
 install-data-hook: install-update-icon-cache
 uninstall-hook: uninstall-update-icon-cache