Convert INCLUDES to AM_CPPFLAGS

INCLUDES has been deprecated starting with automake 1.13. Convert all
occurrences with the recommended AM_CPPFLAGS replacement.

demos/Makefile.am

@@ -4,7 +4,7 @@ AM_CFLAGS = $(OPENMP_CFLAGS)
 AM_LDFLAGS = $(OPENMP_CFLAGS)
 
 LDADD = $(top_builddir)/pixman/libpixman-1.la -lm $(GTK_LIBS) $(PNG_LIBS)
-INCLUDES = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman $(GTK_CFLAGS) $(PNG_CFLAGS)
+AM_CPPFLAGS = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman $(GTK_CFLAGS) $(PNG_CFLAGS)
 
 GTK_UTILS = gtk-utils.c gtk-utils.h ../test/utils.c ../test/utils.h \
             ../test/utils-prng.c ../test/utils-prng.h

pixman/Makefile.am

@@ -85,7 +85,7 @@ noinst_LTLIBRARIES += libpixman-iwmmxt.la
 libpixman_1_la_LIBADD += libpixman-iwmmxt.la
 
 libpixman_iwmmxt_la-pixman-mmx.lo: pixman-mmx.c
-	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(CFLAGS) $(IWMMXT_CFLAGS) -MT libpixman_iwmmxt_la-pixman-mmx.lo -MD -MP -MF $(DEPDIR)/libpixman_iwmmxt_la-pixman-mmx.Tpo -c -o libpixman_iwmmxt_la-pixman-mmx.lo `test -f 'pixman-mmx.c' || echo '$(srcdir)/'`pixman-mmx.c
+	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(AM_CPPFLAGS) $(AM_CPPFLAGS) $(CPPFLAGS) $(CFLAGS) $(IWMMXT_CFLAGS) -MT libpixman_iwmmxt_la-pixman-mmx.lo -MD -MP -MF $(DEPDIR)/libpixman_iwmmxt_la-pixman-mmx.Tpo -c -o libpixman_iwmmxt_la-pixman-mmx.lo `test -f 'pixman-mmx.c' || echo '$(srcdir)/'`pixman-mmx.c
 	$(AM_V_at)$(am__mv) $(DEPDIR)/libpixman_iwmmxt_la-pixman-mmx.Tpo $(DEPDIR)/libpixman_iwmmxt_la-pixman-mmx.Plo
 
 libpixman_iwmmxt_la_DEPENDENCIES = $(am__DEPENDENCIES_1)

test/Makefile.am

@@ -3,7 +3,7 @@ include $(top_srcdir)/test/Makefile.sources
 AM_CFLAGS = $(OPENMP_CFLAGS)
 AM_LDFLAGS = $(OPENMP_CFLAGS) $(TESTPROGS_EXTRA_LDFLAGS)
 LDADD = libutils.la $(top_builddir)/pixman/libpixman-1.la -lm  $(PNG_LIBS)
-INCLUDES = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman $(PNG_CFLAGS)
+AM_CPPFLAGS = -I$(top_srcdir)/pixman -I$(top_builddir)/pixman $(PNG_CFLAGS)
 
 libutils_la_SOURCES = $(libutils_sources) $(libutils_headers)