Either update included xpdf or make dependency on popper.
Test on non-GNU/Linuces.
Check dependencies.

Used to have insane permission bits in the dist tarball.
Maybe this is this also the case:
=> Checking file permissions in pdfedit-0.3.0
warning: /usr/pkg/share/pdfedit/icon/hicolor/page_settm.png: executable bit is set on non-executable file.
warning: /usr/pkg/share/pdfedit/icon/hicolor/stream_mode_gfx.png: executable bit is set on non-executable file.
0 errors and 2 warnings.

* Updated internal QSA to 1.1.5
	(what's QSA, and can it be linked in nexternally?)
* Added --enable-release to configure
	(can we use that?)