[ci skip] Remove automake and aclocal in comments

The Automake and aclocal were part of the previous PHP build system
where Automake created Makefile from the Makefile.in templates and
aclocal was used to produce the aclocal.m4. They were removed as
dependencies via 9d9d39a0de and
e715fb00f8.

README.SELF-CONTAINED-EXTENSIONS

@@ -16,7 +16,6 @@ PREPARING YOUR SYSTEM
   tools:
 
     GNU autoconf
-    GNU automake
     GNU libtool
     GNU m4
 

README.UNIX-BUILD-SYSTEM

@@ -16,7 +16,7 @@ PHP Build System V5 Overview
   build-modules: builds and copies dynamic modules into modules/
   install-cli: installs the CLI only, so that the install-sapi
                target does only what its name says
-- finally abandoned automake (still requires aclocal at this time)
+- finally abandoned automake
 - changed some configure-time constructs to run at buildconf-time
 - upgraded shtool to 1.5.4
 - removed $(moduledir) (use EXTENSION_DIR)

configure.ac

@@ -5,7 +5,7 @@ dnl include Zend specific macro definitions first
 dnl -------------------------------------------------------------------------
 sinclude(Zend/acinclude.m4)
 
-dnl Basic autoconf + automake initialization, generation of config.nice.
+dnl Basic autoconf initialization, generation of config.nice.
 dnl -------------------------------------------------------------------------
 
 AC_PREREQ([2.68])
@@ -1438,7 +1438,7 @@ case $host_alias in
 esac
 
 dnl Silence warning: `ar: 'u' modifier ignored since 'D' is the default`
-dnl SEE https://www.mail-archive.com/automake-patches@gnu.org/msg07705.html
+dnl See https://github.com/php/php-src/pull/3017
 AC_SUBST(AR_FLAGS, [cr])
 
 dnl Only allow AC_PROG_CXX and AC_PROG_CXXCPP if they are explicitly called (by PHP_REQUIRE_CXX).

ext/xmlrpc/libxmlrpc/acinclude.m4

@@ -1,4 +1,4 @@
-# Local macros for automake & autoconf
+# Local macros for autoconf
 
 AC_DEFUN([XMLRPC_FUNCTION_CHECKS],[