examples: Define EDITLINE_LIBRARY when building locally

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

examples/Makefile.am

@@ -1,4 +1,5 @@
 noinst_PROGRAMS  = testit cli excallback
 LDADD            = $(top_builddir)/src/libeditline.la
+AM_CPPFLAGS      = -DEDITLINE_LIBRARY
 AM_CFLAGS        = -I$(top_srcdir)/src -I$(top_srcdir)/include
 AM_LDFLAGS       = -static

examples/excallback.c

@@ -50,8 +50,8 @@ Jeff
 
 #include <termios.h>	/* xxx - should make this more general */
 
-#ifdef READLINE_LIBRARY
-#  include "readline.h"
+#ifdef EDITLINE_LIBRARY
+#  include "editline.h"
 #else
 #  include <readline/readline.h>
 #endif