Clean *nix build system

- remove some outdated and not used macro calls
- remove some unused variables
- Remove not needed comment from tokenizer config.m4
- Remove not needed comment
- remove not needed local variables for editors and syntax highlighting

TSRM/tsrm.m4

@@ -3,7 +3,6 @@ m4_include([TSRM/m4/ax_func_which_gethostbyname_r.m4])
 AC_DEFUN([TSRM_BASIC_CHECKS],[
 
 AC_REQUIRE([AC_PROG_CC])dnl
-dnl AC_REQUIRE([AM_PROG_CC_STDC])dnl
 AC_REQUIRE([AC_PROG_RANLIB])dnl
 
 AC_CHECK_FUNCS(sigprocmask)

configure.ac

@@ -1,4 +1,3 @@
-## -*- autoconf -*-
 dnl ## Process this file with autoconf to produce a configure script.
 
 dnl include Zend specific macro definitions first
@@ -141,8 +140,6 @@ fi
 dnl Settings we want to make before the checks.
 dnl -------------------------------------------------------------------------
 
-cwd=`pwd`
-
 php_shtool=$srcdir/build/shtool
 T_MD=`$php_shtool echo -n -e %B`
 T_ME=`$php_shtool echo -n -e %b`
@@ -173,8 +170,6 @@ PKG_PROG_PKG_CONFIG
 AC_PROG_CC([cc gcc])
 PHP_DETECT_ICC
 PHP_DETECT_SUNCC
-dnl Change to AC_PROG_CC_STDC when we start requiring a post-2.13 autoconf
-dnl AC_PROG_CC_STDC
 AC_PROG_CPP
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_LN_S

ext/intl/config.m4

@@ -1,7 +1,5 @@
 dnl config.m4 for extension intl
 
-dnl ##########################################################################
-dnl Initialize the extension
 PHP_ARG_ENABLE([intl],
   [whether to enable internationalization support],
   [AS_HELP_STRING([--enable-intl],

ext/standard/config.m4

@@ -1,5 +1,3 @@
-dnl -*- autoconf -*-
-
 dnl
 dnl Check if flush should be called explicitly after buffered io
 dnl

ext/tokenizer/config.m4

@@ -1,7 +1,5 @@
 dnl config.m4 for extension tokenizer
 
-dnl Otherwise use enable:
-
 PHP_ARG_ENABLE([tokenizer],
   [whether to enable tokenizer support],
   [AS_HELP_STRING([--disable-tokenizer],