PGV new functions

Ver.1.5.20 1999,6,21

1. Display file name on window frame.
2. [BUG FIX] Polygon group 1 is 0, Polygon group 2 is not 0. But PGV display "No object".

Ver.1.5.19 1998,6,4

1. Animation output is possible to control file.
2. [BUG FIX] xyz analize.

Ver.1.5.18 1997,11,12

1. Append control file output.
2. Remove commands "movex", "movey" from control file. And append "eyex", "eyey", "eyez", "centx", "centy", "centz" commands.
3. [BUG FIX] XYZ, PDB file read. Not depend file delimiter.
4. [BUG FIX] POVray output.
5. Append BMP output.

Ver.1.5.17 1997,10,31

1. Change ball size of molecular basis fill space.
2. Append change molecular ball detail.
3. Append change character color mode.
4. Append dot size change for polygon mode.
5. Append 90 degrees rotate function key.

Ver.1.5.16 1997,7,29

1. Mouse mode asigned to function key.
2. Use GLUT Ver.3.5.

Ver.1.5.15 1997,7,18

1. Append "dot" to polygon display mode.
2. Change background color to sky blue, and increase background color.

Ver.1.5.14 1997,7,14

1. Append "view angle" to mouse mode.