maybe improved page selection combobox
Env var DJVIEW_OPENGL overrides preferences.
fix updating problem with pushpin annotations
document envvars in djview.1
document ctrl+g shortcut in djview.1
pageCombo grows to accomodate page number
remove useless member in thumbnail view
better defaults for the non-autoconf case in djview.pro
more info for macos x (a bit less outdated)