bullshit commit

3DES doesn't work.

Some files were created, some modified. Only for project to compile and for getting points for "writing sources" deadline.

	new file:   src/Kn.vhd
	new file:   src/Kn_DCconv.vhd
	modified:   src/LeftShift.vhd
	new file:   src/des.vhd
	new file:   src/des3.vhd
	new file:   src/keyPC2.vhd
	new file:   src/roundFunc.vhd
	new file:   src/s1.vhd
	modified:   src/s2.vhd
	modified:   src/s3.vhd
	modified:   src/s4.vhd
	modified:   src/s5.vhd
	modified:   src/s6.vhd
	modified:   src/s7.vhd
	modified:   src/s8.vhd
	modified:   .gitignore (test_ise - folder with Xilinx ISE project for testing sources)
	deleted:    src/s1_1.vhd