Log Message:
Change default directry to match pkgsrc style, PR#42575
* Use ${PREFIX}/share instead of /usr/local/share for XDG_DATA_DIRS
* Use ${PKG_SYSCONFDIR}/xdg instead of /etc/xdg for XDG_CONFIG_DIRS

While here, set TEST_TARGET=check and modify test patterns to adapt
above changes.

Bump PKGREVISION.