Fix build with automake-1.13 and modernize .am files.

The following macro: AM_CONFIG_HEADER is deprecated and replaced with AC_CONFIG_HEADERS. INCLUDES is an old version of AM_CPPLAGS.

WINGs/Examples/Makefile.am

@@ -25,5 +25,5 @@ server_DEPENDENCIES = $(top_builddir)/WINGs/libWUtil.la
 server_LDADD = $(top_builddir)/WINGs/libWUtil.la @LIBRARY_SEARCH_PATH@ @INTLIBS@
 
 
-INCLUDES = -I$(top_srcdir)/WINGs -I$(top_srcdir)/wrlib -I$(top_srcdir)/src \
+AM_CPPFLAGS = -I$(top_srcdir)/WINGs -I$(top_srcdir)/wrlib -I$(top_srcdir)/src \
 	-DRESOURCE_PATH=\"$(datadir)/WINGs\" @HEADER_SEARCH_PATH@

WINGs/Extras/Makefile.am

@@ -20,7 +20,7 @@ libExtraWINGs_la_SOURCES = 	\
 	wtableview.h \
 	wtabledelegates.h 
 
-INCLUDES = -I$(top_srcdir)/wrlib -I$(top_srcdir)/WINGs \
+AM_CPPFLAGS = -I$(top_srcdir)/wrlib -I$(top_srcdir)/WINGs \
 	-DRESOURCE_PATH=\"$(datadir)/WINGs\" @HEADER_SEARCH_PATH@
 
 LDADD= $(top_builddir)/WINGs/libWINGs.la $(top_builddir)/wrlib/libwraster.la \

WINGs/Makefile.am

@@ -86,10 +86,10 @@ libWUtil_la_SOURCES = 	\
 	wutil.c
 
 
-AM_CPPFLAGS = -DLOCALEDIR=\"$(NLSDIR)\" -DRESOURCE_PATH=\"$(datadir)/WINGs\"
 AM_CFLAGS =
 
-INCLUDES = -I$(top_srcdir)/WINGs/WINGs -I$(top_srcdir)/wrlib -I$(top_srcdir)/src \
+AM_CPPFLAGS = -DLOCALEDIR=\"$(NLSDIR)\" -DRESOURCE_PATH=\"$(datadir)/WINGs\" \
+	 -I$(top_srcdir)/WINGs/WINGs -I$(top_srcdir)/wrlib -I$(top_srcdir)/src \
 	@XFTFLAGS@ @HEADER_SEARCH_PATH@
 
 pkgconfigdir = $(libdir)/pkgconfig

WINGs/Tests/Makefile.am

@@ -16,5 +16,5 @@ wtest_DEPENDENCIES = $(top_builddir)/WINGs/libWINGs.la
 
 EXTRA_DIST = logo.xpm upbtn.xpm wm.html wm.png
 
-INCLUDES = -I$(top_srcdir)/WINGs -I$(top_srcdir)/wrlib -I$(top_srcdir)/src \
+AM_CPPFLAGS = -I$(top_srcdir)/WINGs -I$(top_srcdir)/wrlib -I$(top_srcdir)/src \
 	-DRESOURCE_PATH=\"$(datadir)/WINGs\" @XFTFLAGS@ @HEADER_SEARCH_PATH@