update libjpeg-turbo from 1.3.0 to 1.3.1
add updated libjpeg-turbo makefile
win: need .objs not .os
win: update ltmain.sh and aclocal.m4, add back in AM_PROG_AS and NASM stuff to aclocal.m4

The old version caused errors when linking, using /OUT, causing the linker
to try to link C:\mozilla-build\msys\OUT;<lib>.lib
win: need NASM for libjpeg-turbo, so set it up in script
win: strcasecmp DNE in MSVC, it is _stricmp, needed for md5/md5cmp.c
win: whoops, for got to add the nasm archive