Upgrade the dependency `Libpng library` to allow submission to `Play Store`

[SandroMachado]

The openalpr binary is compile with a version of libpng that contains security vulnerabilities for users or allows the collection of user data without proper disclosure.

Every app submitted for the Play Store using the library will be rejected, due to the new validation process that checks if the application contains code that has vulnerabilities.

[diarmuidryan]

i have been trying to update opencv lib to 3.1 but am getting this error now dlopen failed: cannot locate symbol "_ZTVN2cv11_InputArrayE" with upgraded lib

[lopezzbelgium]

+1 tried to do this but gave up because this required a lot more time than I can spend on it at the time. Still no one who was able to build everything with the new opencv?

[wicheda]

Has anyone made any progress on this, I am struggling with the same problem.