* Fix 582 Add support for FocusPosition in Sony RAW files
* Thanks to @boardhead sonyFpCrypt() works correctly. Removed debug code. Fixed typos.
* Update doc/templates/Makefile to process Sony2Fp
* Following review by @boardhead. Renamed sonyFpCrypt() as sonyTagDecipher().
* Fixed writing the tag thanks to @boardhead explaining encipher/decipher.
Sadly, ArrayCfg/crpyt does not know if he's encrypting/decrypting.
I've added a sniff in TiffEncoder::visitBinaryArrayEnd to avoid changing the API.
* Added URL to discussion concerning sonyTagCipher()
* make sonyTagCipher() a static function with no external visibility.
