Add 74LVC244 library

+EESchema-DOCLIB  Version 2.0
+#
+#End Doc Library

+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# 74LVC244
+#
+DEF 74LVC244 U 0 40 Y Y 1 F N
+F0 "U" -150 550 60 H V C CNN
+F1 "74LVC244" 0 -550 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+S -200 500 200 -500 0 1 0 N
+X OE1 1 -350 450 150 R 50 50 1 1 P
+X 1A0 2 -350 350 150 R 50 50 1 1 P
+X 2Y3 3 350 -350 150 L 50 50 1 1 P
+X 1A1 4 -350 250 150 R 50 50 1 1 P
+X 2Y2 5 350 -250 150 L 50 50 1 1 P
+X 1A2 6 -350 150 150 R 50 50 1 1 P
+X 2Y1 7 350 -150 150 L 50 50 1 1 P
+X 1A3 8 -350 50 150 R 50 50 1 1 P
+X 2Y0 9 350 -50 150 L 50 50 1 1 P
+X GND 10 350 -450 150 L 50 50 1 1 P
+X VCC 20 350 450 150 L 50 50 1 1 P
+X 2A0 11 -350 -50 150 R 50 50 1 1 P
+X 1Y3 12 350 50 150 L 50 50 1 1 P
+X 2A1 13 -350 -150 150 R 50 50 1 1 P
+X 1Y2 14 350 150 150 L 50 50 1 1 P
+X 2A2 15 -350 -250 150 R 50 50 1 1 P
+X 1Y1 16 350 250 150 L 50 50 1 1 P
+X 2A3 17 -350 -350 150 R 50 50 1 1 P
+X 1Y0 18 350 350 150 L 50 50 1 1 P
+X OE2 19 -350 -450 150 R 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
+#End Library