Make the package autoreconfigurable

Adjust minor details in Makefile.am and configure.in in order to make
the package compatible with the autoconf/automake versions we are
using in Buildroot.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Index: b/cgi-fcgi/Makefile.am
===================================================================
--- a/cgi-fcgi/Makefile.am
+++ b/cgi-fcgi/Makefile.am
@@ -2,7 +2,7 @@
 bin_PROGRAMS     = cgi-fcgi
 
 INCLUDEDIR  = ../include
-CPPFLAGS    = @CPPFLAGS@ -I$(top_srcdir)/include
+AM_CPPFLAGS = @CPPFLAGS@ -I$(top_srcdir)/include
 
 INCLUDE_FILES   = $(INCLUDEDIR)/fastcgi.h  \
 		  $(INCLUDEDIR)/fcgiapp.h  \
Index: b/configure.in
===================================================================
--- a/configure.in
+++ b/configure.in
@@ -4,12 +4,13 @@
 dnl     generate the file "configure", which is run during the build
 dnl     to configure the system for the local environment.
 
-AC_INIT
-AM_INIT_AUTOMAKE(fcgi, 2.4.0)
+AC_INIT([fcgi], [2.4.0])
+AM_INIT_AUTOMAKE([foreign])
 
 AM_CONFIG_HEADER(fcgi_config.h)
 
 AC_PROG_CC
+AC_PROG_CC_C_O
 AC_PROG_CPP 
 AC_PROG_INSTALL 
 AC_PROG_LIBTOOL
Index: b/examples/Makefile.am
===================================================================
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -11,7 +11,7 @@
 EXTRA_PROGRAMS = threaded echo-cpp
 
 INCLUDEDIR  = ../include
-CPPFLAGS    = @CPPFLAGS@ -I$(top_srcdir)/include
+AM_CPPFLAGS = @CPPFLAGS@ -I$(top_srcdir)/include
 
 INCLUDE_FILES   = $(INCLUDEDIR)/fastcgi.h    \
                   $(INCLUDEDIR)/fcgiapp.h    \
Index: b/libfcgi/Makefile.am
===================================================================
--- a/libfcgi/Makefile.am
+++ b/libfcgi/Makefile.am
@@ -1,7 +1,7 @@
 # $Id: Makefile.am,v 1.9 2001/12/22 03:16:20 robs Exp $
 
 INCLUDEDIR  = ../include
-CPPFLAGS    = @CPPFLAGS@ -I$(top_srcdir)/include
+AM_CPPFLAGS = @CPPFLAGS@ -I$(top_srcdir)/include
 
 INCLUDE_FILES = $(INCLUDEDIR)/fastcgi.h     \
                 $(INCLUDEDIR)/fcgiapp.h     \