add a 7.9 version check

ext/curl/config.m4

@@ -24,7 +24,7 @@ if test "$PHP_CURL" != "no"; then
   fi
 
   CURL_CONFIG="curl-config"
-  AC_MSG_CHECKING(for cURL greater than 7.7.3)
+  AC_MSG_CHECKING(for cURL 7.9 or greater)
 
   if ${CURL_DIR}/bin/curl-config --libs print > /dev/null 2>&1; then
     CURL_CONFIG=${CURL_DIR}/bin/curl-config
@@ -36,11 +36,11 @@ if test "$PHP_CURL" != "no"; then
 
   curl_version_full=`$CURL_CONFIG --version`
   curl_version=`echo ${curl_version_full} | sed -e 's/libcurl //' | awk 'BEGIN { FS = "."; } { printf "%d", ($1 * 1000 + $2) * 1000 + $3;}'`
-  if test "$curl_version" -ge 7007003; then
+  if test "$curl_version" -ge 7009000; then
     AC_MSG_RESULT($curl_version_full)
     CURL_LIBS=`$CURL_CONFIG --libs`
   else
-    AC_MSG_ERROR(cURL version 7.7.3 or later is required to compile php with cURL support)
+    AC_MSG_ERROR(cURL version 7.9 or later is required to compile php with cURL support)
   fi
 
   PHP_ADD_INCLUDE($CURL_DIR/include)