Merge branch 'realpath_cache_size_update' into PHP-7.0

* realpath_cache_size_update:
  Increase realpath_cache_size default value
  add UPGRADING note regarding realpath_cache_size

diff --cc UPGRADING
index 355549ce5fa0d4a51d3516a1311326e12a707261,355549ce5fa0d4a51d3516a1311326e12a707261..09522c71c29866c4a5b912dfcb614ce2f8cd19ba
--- 1/UPGRADING
--- 2/UPGRADING
+++ b/UPGRADING
@@@ -788,6 -788,6 +788,7 @@@ out, that the corresponding SDK isn't a
    . Removed asp_tags ini directive. Trying to enable it will result in a fatal
      error.
    . Removed always_populate_raw_post_data ini directive.
++  . realpath_cache_size set to 4096k by default
  
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  12. Windows Support