remove m4/ directory and generally clean up automake/autoconf inputs

Makefile.am

@@ -115,7 +115,6 @@ BUILT_SOURCES = \
 SUBDIRS = \
 	. \
 	doc \
-	m4  \
 	examples \
 	po \
 	tools \

configure.in

@@ -24,22 +24,21 @@
 
 # autoconf requirements and initialization
 
-AC_PREREQ(2.59)
 AC_INIT([the fast lexical analyser generator], [2.5.36],
 [flex-help@lists.sourceforge.net], [flex])
 AC_CONFIG_SRCDIR([scan.l])
-AM_INIT_AUTOMAKE([gnits dist-bzip2])
+AM_INIT_AUTOMAKE([gnits dist-bzip2 1.10])
 AC_CONFIG_HEADER([config.h:conf.in])
 
 # checks for programs
 
 AM_GNU_GETTEXT([external])
 AM_GNU_GETTEXT_VERSION(0.12)
-
 AC_PROG_YACC
 AM_PROG_LEX
 AC_PROG_CC
 AC_PROG_CXX
+AM_PROG_CC_C_O
 AC_PROG_LN_S
 AC_PROG_RANLIB
 AC_PROG_AWK
@@ -79,13 +78,13 @@ else
    AC_MSG_WARN(no indent program found: make indent target will not function)
 fi
 
-# checks for libraries
+# checks for headers
 
-AC_FUNC_ALLOCA
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS([inttypes.h libintl.h limits.h locale.h malloc.h netinet/in.h stddef.h stdlib.h string.h strings.h unistd.h regex.h])
-AC_CHECK_LIB(m, log10)
+AC_CHECK_HEADERS([inttypes.h libintl.h limits.h locale.h malloc.h netinet/in.h regex.h stddef.h stdlib.h string.h strings.h unistd.h])
+
+# checks for libraries
 
 # The test test-pthread uses libpthread, so we check for it here, but
 # all we need is the preprocessor symbol defined since we don't need
@@ -97,6 +96,8 @@ AC_DEFINE([HAVE_LIBPTHREAD], 0, [pthread library] )
 )
 AC_CHECK_HEADERS([pthread.h])
 
+AC_CHECK_LIB(m, log10)
+
 # Checks for typedefs, structures, and compiler characteristics.
 
 AC_HEADER_STDBOOL
@@ -105,6 +106,7 @@ AC_TYPE_SIZE_T
 
 # Checks for library functions.
 
+AC_FUNC_ALLOCA
 AC_FUNC_FORK
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
@@ -116,7 +118,6 @@ doc/Makefile
 examples/Makefile
 examples/fastwc/Makefile
 examples/manual/Makefile
-m4/Makefile
 po/Makefile.in
 tools/Makefile
 tests/Makefile