Description:
------------
If you extract the sources snapshot inside a folder that has spaces in the path, the configure fails with a message similar to this: 
"checking for PDO includes... test: 1: /media/Disc: unexpected operator"
I extracted the sources into the "/media/Disc 1/php6" folder.
Inside the configure.log file there is a reference to configure:67842 and something about not finding "php_pdo_driver.h"

Here is my patch
--- /home/user/php6.0-200908152030/configure.original 
+++ /home/user/php6.0-200908152030/configure 
@@ -67839,11 +67839,11 @@
   
     echo $ac_n "checking for PDO includes""... $ac_c" 1>&6
 echo "configure:67842: checking for PDO includes" >&5
-    if test -f $abs_srcdir/include/php/ext/pdo/php_pdo_driver.h; then
+    if test -f "$abs_srcdir/include/php/ext/pdo/php_pdo_driver.h"; then
       pdo_inc_path=$abs_srcdir/ext
-    elif test -f $abs_srcdir/ext/pdo/php_pdo_driver.h; then
+    elif test -f "$abs_srcdir/ext/pdo/php_pdo_driver.h"; then
       pdo_inc_path=$abs_srcdir/ext
-    elif test -f $prefix/include/php/ext/pdo/php_pdo_driver.h; then
+    elif test -f "$prefix/include/php/ext/pdo/php_pdo_driver.h"; then
       pdo_inc_path=$prefix/include/php/ext
     fi

Reproduce code:
---------------
This is my configure command:

./configure --with-apxs2=/usr/bin/apxs2 --with-mysql --prefix=/opt/php6 --with-regex --with-libxml-dir=/usr/lib --with-openssl=/usr/lib --with-pcre-regex --with-zlib --enable-bcmath --with-bz2 --enable-calendar --with-curl --with-enchant=/usr/lib --enable-exif --enable-ftp --with-gd --enable-gd-native-ttf --with-gettext --with-gmp --with-mhash --with-imap --with-imap-ssl --enable-intl --enable-mbstring --with-mcrypt --with-mssql --with-mysql --with-mysqli --enable-embedded-mysqli --enable-pcntl --with-pspell --with-libedit --with-readline --enable-shmop --enable-soap --enable-sockets --enable-sysvmsg --enable-sysvsem --enable-sysvshm --with-tidy --with-xmlrpc --with-xsl --enable-zip --with-openssl=/usr --with-enchant=/usr --with-kerberos --enable-embedded-mysqli=shared --with-pdo-mysql=shared

Expected result:
----------------
It should configure just fine

Actual result:
--------------
"checking for PDO includes... test: 1: /media/Disc: unexpected operator"