require automake 1.7 in condifure.in; update all Makefile.am: add comments,

replace obsoleted INCLUDES by AM_CPPFLAGS

Makefile.am

@@ -1,5 +1,10 @@
+## Process this file with automake to produce Makefile.in
+
+## set automake strictness to 'foreign'
 AUTOMAKE_OPTIONS = foreign
+
 SUBDIRS = shared clients server docs scripts
+
 EXTRA_DIST = LCDd.conf LCDclients.conf README.IRman debian
 
 dox:
@@ -7,3 +12,5 @@ dox:
 
 dist-hook:
 	rm -rf `find $(distdir)/debian -name CVS`
+
+## EOF