Merged simmod/modsim directories.

.gitignore

modsim/ass1/.gitignore

modsim/ass1/Makefile

modsim/ass1/benchmark.bash

modsim/ass1/colors.tex

modsim/ass1/extra_precision.c

modsim/ass1/floating_point.c

modsim/ass1/kahan_sum.c

modsim/ass1/report.tex

modsim/ass1/speed.c

modsim/ass1/sum.c

modsim/ass2/.gitignore

modsim/ass2/Makefile

modsim/ass2/opg-v2.pdf

modsim/ass2/q1.c

modsim/ass2/q2.c

modsim/ass2/q3.c

modsim/popdyn.pdf

os/extra/src/report/.gitignore

os/extra/src/report/Makefile