Engine stuff:
* Add 'r_shadescale_unbounded' cvar. When set to 0, OpenGL renderers should never
draw completely black objects (currently only implemented for Polymost)
Mapster32:
* Add 'r_shadescale' to config
* In 3D mode, make SPACE behave the same as holding down a mose button: the
currently pointed-at object is locked. Required some modification of a.m32
to play well (i.e. not reset SPACE). This is useful by itself but more so
in conjunction with the next point
* make Alt behave as a modifier with PGUP/PGDN: when aiming at a 2-sided wall,
move the other side's sector's ceiling or floor (only this is new).
* Auto-alignment of walls can be controlled in a finer grained fashion now:
When pressing '.', only the immediate neighbors get aligned. Use Ctrl-. for
the old behaviour.
* When inserting a point in 2D mode, auto-align the neighboring wall
git-svn-id: https://svn.eduke32.com/eduke32@1848 1a8010ca-5511-0410-912e-c29ae57300e0
