Capability for interpolation of player viewpoint and mobj locations.
TODO: sector heights, a few bug fixes

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2819 86ba831e-150c-0410-ab35-e06eaae15ed9
MP2E's compiler doesn't have an overload of abs() for long long; use llabs instead.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2820 86ba831e-150c-0410-ab35-e06eaae15ed9
* Add Odamex to "significant code" section w/special credit to dr_sean
* Alphabetize significant code and libraries/utilities lists

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2821 86ba831e-150c-0410-ab35-e06eaae15ed9
Fix Russell's name

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2822 86ba831e-150c-0410-ab35-e06eaae15ed9
Sector height interpolation

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2823 86ba831e-150c-0410-ab35-e06eaae15ed9
Interpolation for camera viewpoints.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2824 86ba831e-150c-0410-ab35-e06eaae15ed9