unity defines panel height all over the place

[Thomi Richards]

In the unity source code, the panel height is defined in several different places. I'm reporting this bug so I remember to clean it up later:

DashController member variable 'panel_height'
HudController member variable 'panel_height'
const int in launcher.cpp: 'panel_height'
const int in PanelIndivatorEntryView.cpp: 'PANEL_HEIGHT'

...and this one:

/home/thomi/code/canonical/unity/hashdefines-are-evil/plugins/unityshell/src/unityshell.cpp:
 1461 int height = 680;
 1462 int launcher_width = optionGetIconSize() + 18;
 1463: int panel_height = 24;
 1464 int x = monitor_geo.x + launcher_width + (monitor_geo.width - launcher_width- width) / 2;
 1465: int y = monitor_geo.y + panel_height + (monitor_geo.height - panel_height - height) / 2;
 1466