Fix #78788: ./configure generates invalid php_version.h

Change $SED to "${SED}" such that the IFS is not used to split the
output of that variable.

Author: aragon999

NEWS

@@ -4,6 +4,7 @@ PHP                                                                        NEWS
 
 - Core:
   . Fixed bug #78768 (redefinition of typedef zend_property_info). (Nikita)
+  . Fixed bug #78788 (./configure generates invalid php_version.h). (max)
 
 - Standard:
   . Fixed bug #77930 (stream_copy_to_stream should use mmap more often).

configure.ac

@@ -109,7 +109,7 @@ extern "C++" {
 ])
 
 ac_IFS=$IFS; IFS="."
-set $(echo AC_PACKAGE_VERSION | $SED 's/\([[0-9\.]]*\)\(.*\)/\1\.\2/')
+set $(echo AC_PACKAGE_VERSION | "${SED}" 's/\([[0-9\.]]*\)\(.*\)/\1\.\2/')
 IFS=$ac_IFS
 PHP_MAJOR_VERSION=[$]1
 PHP_MINOR_VERSION=[$]2
@@ -806,8 +806,8 @@ if test "$PHP_GCOV" = "yes"; then
 
   dnl Remove all optimization flags from CFLAGS.
   changequote({,})
-  CFLAGS=`echo "$CFLAGS" | $SED -e 's/-O[0-9s]*//g'`
-  CXXFLAGS=`echo "$CXXFLAGS" | $SED -e 's/-O[0-9s]*//g'`
+  CFLAGS=`echo "$CFLAGS" | "${SED}" -e 's/-O[0-9s]*//g'`
+  CXXFLAGS=`echo "$CXXFLAGS" | "${SED}" -e 's/-O[0-9s]*//g'`
   changequote([,])
 
   dnl Add the special gcc flags.
@@ -826,8 +826,8 @@ if test "$PHP_DEBUG" = "yes"; then
   PHP_DEBUG=1
   ZEND_DEBUG=yes
   changequote({,})
-  CFLAGS=`echo "$CFLAGS" | $SED -e 's/-O[0-9s]*//g'`
-  CXXFLAGS=`echo "$CXXFLAGS" | $SED -e 's/-O[0-9s]*//g'`
+  CFLAGS=`echo "$CFLAGS" | "${SED}" -e 's/-O[0-9s]*//g'`
+  CXXFLAGS=`echo "$CXXFLAGS" | "${SED}" -e 's/-O[0-9s]*//g'`
   changequote([,])
   dnl Add -O0 only if GCC or ICC is used.
   if test "$GCC" = "yes" || test "$ICC" = "yes"; then
@@ -1210,7 +1210,7 @@ libdir=`eval echo $libdir`
 datadir=`eval eval echo $datadir`
 
 dnl Build extension directory path.
-ZEND_MODULE_API_NO=`$EGREP '#define ZEND_MODULE_API_NO ' $srcdir/Zend/zend_modules.h|$SED 's/#define ZEND_MODULE_API_NO //'`
+ZEND_MODULE_API_NO=`$EGREP '#define ZEND_MODULE_API_NO ' $srcdir/Zend/zend_modules.h|"${SED}" 's/#define ZEND_MODULE_API_NO //'`
 
 if test -z "$EXTENSION_DIR"; then
   extbasedir=$ZEND_MODULE_API_NO