[ekiga] Fix name conflict in configure.ac just introduced

[Eugen Dedu <ededu src gnome org>]

commit c28ae87ff43fec6ef5100ed0c2fce51692087cf8
Author: Eugen Dedu <eugen dedu univ-fcomte fr>
Date:   Sat Jun 11 19:49:07 2016 +0200

    Fix name conflict in configure.ac just introduced
    
    GSTREAMER was already used in another PKG_CHECK_MODULE.

 configure.ac    |    2 +-
 lib/Makefile.am |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b9a9221..ec60c03 100644
--- a/configure.ac
+++ b/configure.ac
@@ -158,7 +158,7 @@ dnl ##########################################
 dnl   Mandatory GST Clutter & Clutter support
 dnl ##########################################
 PKG_CHECK_MODULES([CLUTTER_GTK], [clutter-gtk-1.0])
-PKG_CHECK_MODULES([GSTREAMER], [gstreamer-plugins-base-1.0])
+PKG_CHECK_MODULES([GSTREAMER_PLUGINS_BASE], [gstreamer-plugins-base-1.0])
 
 dnl ###############################
 dnl   Mandatory BOOST support
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 38c18f9..6e26b5f 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -479,7 +479,7 @@ endif
 # Sources of the Clutter video output component
 ##
 
-AM_CPPFLAGS += $(CLUTTER_GTK_CFLAGS) $(GSTREAMER_CFLAGS) \
+AM_CPPFLAGS += $(CLUTTER_GTK_CFLAGS) $(GSTREAMER_PLUGINS_BASE_CFLAGS) \
        -I$(top_srcdir)/lib/engine/components/clutter-gst-videooutput
 
 libekiga_la_SOURCES += \
@@ -488,7 +488,7 @@ libekiga_la_SOURCES += \
        engine/components/clutter-gst-videooutput/videooutput-main-clutter-gst.cpp      \
        engine/components/clutter-gst-videooutput/videooutput-main-clutter-gst.h
 
-libekiga_la_LDFLAGS += $(CLUTTER_GTK_LIBS) $(GSTREAMER_LIBS)
+libekiga_la_LDFLAGS += $(CLUTTER_GTK_LIBS) $(GSTREAMER_PLUGINS_BASE_LIBS)
 
 ##
 #  Sources of the foe list component