* Use SPDX identifier in header files
* Use SPDX identifier in rest of source files
* Fix usage of SPDX for files with 2 licenses
* Add global license file
* Fix compilation
- Provide begin/end iterators to DataBuf and simplify code
- Adapt test output after last changes
- Replacing long by size_t in value.hpp
- Use size_t in some Photoshop functions
- Remove some static_casts
errno can be set to a non-zero value from a previously failed system
call, it is not reset by successful ones
=> have to do that manually or the unit test fails because it detects
an "outdated" error message
This change define explicitly the behavior that exiv2::getEnv should have
on response to unexpected inputs.
There are some other minor changes:
- Use _putenv_s for the unit tests on Windows
- Add todo comment
- Remove deprecated note about freeing memory
Luis Díaz Más
Miloš Komarčević
Rosen Penev
Luis Díaz Más
Robin Mills
Dan Čermák