What changed in EDuke32, build by build

update libdivide

add divideu64()/divideu64_noinline()

fix compiler warnings

add error checking to and slightly clean up engineLoadBoardV5V6()

add error checking to engineLoadBoard()

potentially improve dealing with corrupt .md2/.md3 models

use kread_and_test() instead of regular kread() where appropriate

move REVSTR stuff to rev.h so it doesn't need to be duplicated between rev.cpp and windows_inc.h

fix rev.cpp so it works properly outside of builds on Windows

fix winlayer wm_setapptitle() to deal with being passed a pointer to apptitle[]

move swallf[] and lookups[] allocation to videoAllocateBuffers()

change calcFrameDelay() to no longer reduce the frame limit by 1 fps per 60Hz of refresh rate with r_maxfps -1

use an additional bitmap in clipupdatesector() to mark which sectors have been checked with inside()

disable annoying clipupdatesector() console warning in release builds

make a few things in clipmove() const that I must have missed the last time I worked on it

better handle the GL driver enforcing a particular SwapInterval

fix poorly written time comparison in vsync handling

remove weird framejitter shit from FPS limiter because it doesn't do what I wanted it to

comment the reason SetWindowGrab exists

bypass SDL_SetWindowGrab on Windows

add yax_getflorzofslope() and yax_getceilzofslope()

make cliptestsector() (used by clipmove(), etc) TROR aware

clean up classic mode sloped sprite drawing a little

add mutex_try()

misc cleanups, support for drawing transparent lines in 2d mode. DONT_BUILD.