Install phpize into libdir.

--- php-5.0.2/scripts/Makefile.frag.phpize64
+++ php-5.0.2/scripts/Makefile.frag
@@ -4,7 +4,7 @@
 #
 
 phpincludedir = $(includedir)/php
-phpbuilddir = $(prefix)/lib/php/build
+phpbuilddir = $(libdir)/php/build
 
 BUILD_FILES = \
 	scripts/phpize.m4 \
--- php-5.0.2/scripts/phpize.in.phpize64
+++ php-5.0.2/scripts/phpize.in
@@ -2,7 +2,7 @@
 
 # Variable declaration
 prefix='@prefix@'
-phpdir="$prefix/lib/php/build"
+phpdir="@libdir@/php/build"
 includedir="$prefix/include/php"
 builddir="`pwd`"