Stdio.File: Fixed autodoc markup error.
Image.PNG: Fixed leak of arrays in __decode().
_Roxen.http_decode_string: do not overflow
typo in testsuite comment
decode_value: fix memory leak in PIKE_DEBUG

free_decode_data() might throw errors in PIKE_DEBUG with
!free_after_error, so keep the error handler around to prevent decode
data from leaking.

This is currently triggered when decoding SSL.State and SSL.Session.
Calendar.mkrules: Added some more files to ignore.
Updated to tzdata2014h.
Calendar: Added some further tzdata files.

The tzdata directory should now be fully in sync with the tzdata2014h dist.