Minor cleanup and simplification of build system

- Move 'foreign' declaration from Makefile.am's to configure script
- Move CFLAGS from configure script to src/Makefile.am
- Remove faltering license blurb at top of configure script, no need
  for this since we a) do not care, b) falls under project license

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

Makefile.am

@@ -1,4 +1,3 @@
-AUTOMAKE_OPTIONS = foreign
 doc_DATA    = README LICENSE CHANGELOG
 EXTRA_DIST  = LICENSE CHANGELOG INSTALL
 SUBDIRS     = src include man examples

configure.ac

@@ -1,20 +1,5 @@
-# Minix libeditline                                           -*- Autoconf -*-
-#
-# Copyright (c) 2008-2013  Joachim Nilsson <troglobit()gmail!com>
-#
-# Process this file with autoconf to produce a configure script.
-#
-# This file is free software; as a special exception the author gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
-AC_PREREQ(2.61)
 AC_INIT(editline, 1.15.2-beta1, https://github.com/troglobit/editline/issues)
-AM_INIT_AUTOMAKE([1.11 no-dist-gzip dist-xz])
+AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz])
 AM_SILENT_RULES([yes])
 
 AC_CONFIG_MACRO_DIR([m4])
@@ -83,8 +68,6 @@ AC_ARG_ENABLE(termcap,
    [AS_HELP_STRING([--enable-termcap], [Use termcap library to query terminal size.])],
    AC_DEFINE([CONFIG_USE_TERMCAP], 1, [Define to use the termcap library for terminal size.]))
 
-AM_CFLAGS="-std=gnu99 $inline_cflags -W -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow -Wcast-qual"
-AC_SUBST(AM_CFLAGS)
 # Check for a termcap compatible library if enabled
 AS_IF([test "$enable_termcap" != no],
 	AC_CHECK_LIB(termcap, tgetent, , [

examples/Makefile.am

@@ -1,5 +1,3 @@
-AUTOMAKE_OPTIONS = foreign
-
 noinst_PROGRAMS  = testit cli
 LDADD            = $(top_builddir)/src/libeditline.la
 AM_CFLAGS        = -I$(top_srcdir)/src -I$(top_srcdir)/include

include/Makefile.am

@@ -1,4 +1,2 @@
-AUTOMAKE_OPTIONS = foreign
-
 library_includedir      = $(includedir)
 library_include_HEADERS = editline.h

src/Makefile.am

@@ -1,3 +1,5 @@
-AUTOMAKE_OPTIONS        = foreign
 lib_LTLIBRARIES         = libeditline.la
 libeditline_la_SOURCES  = editline.c editline.h complete.c sysunix.c unix.h
+libeditline_la_CFLAGS   = -std=gnu99
+libeditline_la_CFLAGS  += -W -Wall -Wundef -Wunused -Wstrict-prototypes
+libeditline_la_CFLAGS  += -Werror-implicit-function-declaration -Wshadow -Wcast-qual