get automake to complain a bit less

src/Makefile.am

-INCLUDES = -I${VARNISH_SHARE_INCLUDE} -I${VARNISH_PKG_INCLUDE} \
+AM_CPPFLAGS = -I${VARNISH_SHARE_INCLUDE} -I${VARNISH_PKG_INCLUDE} \
 	-I$(top_srcdir)/include
 
 bin_PROGRAMS = trackrdrd

src/mq/activemq/Makefile.am

-INCLUDES = @VARNISH_CFLAGS@ -I$(top_srcdir)/include \
+AM_CPPFLAGS = @VARNISH_CFLAGS@ -I$(top_srcdir)/include \
 	 @AMQ_CFLAGS@ @APR_CFLAGS@ @APU_CFLAGS@
 
 pkglib_LTLIBRARIES = libtrackrdr-activemq.la

src/mq/file/Makefile.am

-INCLUDES = -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include
 
 CURRENT = 5
 REVISION = 0

src/mq/kafka/Makefile.am

-INCLUDES = -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include
 
 CURRENT = 5
 REVISION = 0

src/mq/kafka/test/Makefile.am

-INCLUDES = -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include
 
 TESTS = test_partition test_kafka