[poppler] ABI changes report

[Ponomarenko Andrey]

Hello,

I've started to maintain ABI changes report for the Poppler library: http://abi-laboratory.pro/tracker/timeline/poppler/

Hope the report will help Linux maintainers to be aware of ABI changes, added/removed symbols and SONAME bumps in the library. Please let me know if there are any false positives in the report (I'll remove them or add a comment).

Thank you.