remove an apostrophe to stop confusing vi's syntax hilighting

gstlal-calibration/configure.ac

@@ -154,7 +154,7 @@ PKG_CHECK_MODULES([gstreamer], [gstreamer-${GSTREAMER_RELEASE} >= ${MIN_GSTREAME
 AC_SUBST([gstreamer_CFLAGS])
 AC_SUBST([gstreamer_LIBS])
 AC_SUBST([plugindir], [${libdir}/gstreamer-${GSTREAMER_RELEASE}])
-AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your gstreamer's default search path, you might need to add the directory
+AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your default gstreamer plugin search path, you might need to add the directory
 
 	$plugindir
 	

gstlal-inspiral/configure.ac

@@ -164,7 +164,7 @@ PKG_CHECK_MODULES([gstreamer], [gstreamer-${GSTREAMER_RELEASE} >= ${MIN_GSTREAME
 AC_SUBST([gstreamer_CFLAGS])
 AC_SUBST([gstreamer_LIBS])
 AC_SUBST([plugindir], [${libdir}/gstreamer-${GSTREAMER_RELEASE}])
-AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your gstreamer's default search path, you might need to add the directory
+AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your default gstreamer plugin search path, you might need to add the directory
 
 	$plugindir
 	

gstlal-ugly/configure.ac

@@ -210,7 +210,7 @@ PKG_CHECK_MODULES([gstreamer], [gstreamer-${GSTREAMER_RELEASE} >= ${MIN_GSTREAME
 AC_SUBST([gstreamer_CFLAGS])
 AC_SUBST([gstreamer_LIBS])
 AC_SUBST([plugindir], [${libdir}/gstreamer-${GSTREAMER_RELEASE}])
-AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your gstreamer's default search path, you might need to add the directory
+AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your default gstreamer plugin search path, you might need to add the directory
 
 	$plugindir
 	

gstlal/configure.ac

@@ -165,7 +165,7 @@ PKG_CHECK_MODULES([gstreamer], [gstreamer-${GSTREAMER_RELEASE} >= ${MIN_GSTREAME
 AC_SUBST([gstreamer_CFLAGS])
 AC_SUBST([gstreamer_LIBS])
 AC_SUBST([plugindir], [${libdir}/gstreamer-${GSTREAMER_RELEASE}])
-AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your default gstreamer search path, you might need to add the directory
+AC_MSG_NOTICE([If you have chosen to install the software in a location not included in your default gstreamer plugin search path, you might need to add the directory
 
 	$plugindir