Merge branch 'PHP-5.6'

* PHP-5.6:
  C89 compat
  add include for missing localeconv_r proto

diff --cc ext/pdo_mysql/mysql_driver.c
Simple merge

diff --cc ext/standard/formatted_print.c
Simple merge

diff --cc main/snprintf.c
Simple merge

diff --cc main/spprintf.c
Simple merge