737-800 take off speeds, v. 1.02

First official release: calculate take off performence (v1, vr and v2) for Boeing 737-800.

• Do not use for real life flight!
• Valid for flight simulation use only!

fix top.java:267

int wt1t = (int) Math.ceil( wght / 5000 );

737-800 take off speeds, v. 1.01

First release of the program: calculates take off speeds v1, vr and v2 for Boeing 737-800.

• Do not use for real life flight!
• Valid for flight simulation use only!