add mpiabort and input

src/Graph_Generator.c

src/Hello

src/MPI_Communication.c

src/MST_OpenMPI

src/MST_OpenMPI.c

src/QuickSort

src/QuickSort_MPI

src/QuickSort_MPI.c

src/QuickSort_Serial

src/QuickSort_Serial.c

src/a.out

src/b.out

src/c.out

src/log