Summary of Changes(1.73 -> 1.74)

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List of Changes
==========================
1) Fixed bugs - r478, r480, r481, r482, r483, r484, r486, r489,
                r491, r492, r493, r494, r495, r496, r497, r498
   - Fixed wrong printf format.
   - Fixed a bug at changing umask.
   - Fixed a bug at changing utimens.
   - When changing object size, could not update stat cache.
   - Fixed some memory leak.
   - Fixed a bug about ftruncate(Issue 371).
   - Fixed a bug about multipart post request(Issue 371).
   - Fixed a bug about multipart post/head retrying(Issue 389).
   - Fixed public_bucket option bug
   - Fixed file size over flow on 32bit OS

2) Changed codes - r479, r480, r482, r485, r488, r490, r493
   - Calling curl_global_init function once.
   - Adds dynamic lock callback for OpenSSL.
   - Checking strict for s3fs command parameters.
   - Caches SSL session.
   - Changes parallel count 500 to 20 for multipart head req.
   - Adds --enable-nss-init configure option.
   - Changes updating timing for object cache(Issue 368).
   - Changes level for some debugging codes.
   - Adds casting for curl_ott_t variables.
   - Adds IAM role option.
   - Adds function on utility mode for removing failed multipart req.



git-svn-id: http://s3fs.googlecode.com/svn/trunk@499 df820570-a93a-0410-bd06-b72b767a4274