Merge pull request Exiv2#2137 from Exiv2/mainRecoverRecordId

Recover IptDataSets::recordId in the API

Replace Value::toLong with Value::toInt64. (Exiv2#2062)

* Replace Value::toLong with Value::toInt64.

* Fix compiler warning.

* Fix compile error.

* Fix declaration of canonEv

* Fix compiler warning.

* Fix compiler warning.

* Use int64_t for offsets in tiffcomposite_int.cpp

* Fix compiler warning.

* Fix compiler warnings.

* Fix compiler warning.

* Fix compiler warning.

* Fix compiler warning.

* Fix compiler warning.

* Remove static_cast<long int> in TagDetails initializer.

Add more DNG 1.6 tags (Exiv2#2023)

* Add more DNG 1.6 tags

* Update CinemaDNG, add more spec links

Exiv2 v0.27.5 RC3

git tag -a 'v0.27.5-RC2'

Exiv2 v0.27.5 RC1

Exiv2 v0.27.4

Exiv2 v0.27.4 RC3