[epiphany] build: s/INCLUDES/AM_CPPFLAGS/ to silence Automake warning

[Colin Walters <walters src gnome org>]

commit 1d5764e2c12e3e1c8e406705c2daf5a4e50e608f
Author: Colin Walters <walters verbum org>
Date:   Thu Jan 2 08:52:22 2014 -0500

    build: s/INCLUDES/AM_CPPFLAGS/ to silence Automake warning
    
    We were already using AM_CPPFLAGS elsewhere, so it has to work.

 tests/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1db8a32..e515b42 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -91,7 +91,7 @@ test-report perf-report full-report: ${TEST_PROGS}
 # run tests in cwd as part of make check
 check-local: test-nonrecursive
 
-INCLUDES = \
+AM_CPPFLAGS = \
        -I$(top_srcdir)/embed    \
        -I$(top_srcdir)/lib      \
        -I$(top_srcdir)/lib/history \