automake: replace INCLUDES by AM_CPPFLAGS

INCLUDES are now deprecated and throw warnings when using automake 1.13.
We now also differentiate AM_CPPFLAGS and AM_CFLAGS, where includes and
defines are passed to AM_CPPFLAGS only.

src/libimcv/plugins/imv_scanner/Makefile.am

@@ -1,8 +1,10 @@
-
-INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libtncif \
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src/libstrongswan \
+	-I$(top_srcdir)/src/libtncif \
 	-I$(top_srcdir)/src/libimcv
 
-AM_CFLAGS = -rdynamic
+AM_CFLAGS = \
+	-rdynamic
 
 imcv_LTLIBRARIES = imv-scanner.la
 
@@ -14,4 +16,3 @@ imv_scanner_la_SOURCES = \
 	imv_scanner_agent.h imv_scanner_agent.c
 
 imv_scanner_la_LDFLAGS = -module -avoid-version
-