Classic mode should be visually distinct from the normal session,
so provide a mode-specific stylesheet which looks closer to the
familiar GNOME2 default theme.
https://bugzilla.gnome.org/show_bug.cgi?id=693169
The Makefile had two rules by which it could possibly have generated the
intermediate .in file (on the way from .in.in to .session) and it picked
the one that didn't contain the substitution for @libexecdir@.
Consolidate the rules into one that does all the needed substitutions.
https://bugzilla.gnome.org/show_bug.cgi?id=689756
Jeremy Bicha
Florian Müllner
Ryan Lortie
Debarshi Ray