Update php-apc to 3.1.14.

3.1.14

- When include_once_override is on, use the cached realpath. See rev. 328172
  for a full explanation (Rasmus)
- Fixed bug #63852 (apc 3.1.13 fails to build if __APC_SMA_DEBUG__ is set)
  (Laruence)
- Fixed bug #63434 (Segfault if apc.shm_strings_buffer excceed apc.shm_size)
  (Laruence)
- Fixed bug #63070 (apc.include_once_override bug) (Laruence)
- Fixed bug #62151 (Stat files only require read access only, windows). (Pierre)
- fix num. segfaults by revert rev. 326820 and issue reported in bug #62972
- Fixed bug #63491 file_md5 value was wrong when use apc_bin_load function
  (Anatoliy)
- Fixed PHP 5.5 compatibility (related to VM variables access fix) (Anatoliy)
- Added tests for bugs #63224, #63545, #63669 (Anatoliy)

(taca)