Added two new window attributes to set the width and height.
Externally the attributes can only be set with the global config options/
environmental variables EQ_WINDOW_IATTR_HINT_WIDTH and
EQ_WINDOW_IATTR_HINT_HEIGHT. Each overrides the default window width/height
when no configuration file is provided.
Merge cleanups
Minor fix
Fixes for the compound error messages
Merge pull request #300 from bilgili/master

Fixes for the compound error messages
Fix #69: Introduce WindowSettings to decouple Window from SystemWindow

This also fixes a possible race while creating new system windows from
different threads as they modify the parent eq::Window directly.
Cleanups
Merge branch 'master' of https://github.com/tribal-tec/Equalizer into windowsettings
Not clamping window size hints to physical display if offscreen.
Merge pull request #302 from hernando/width_height_window_attr

Not clamping window size hints to physical display if offscreen.
Remove old configTool
Merge branch 'master' of https://github.com/Eyescale/Equalizer
CR #301
Fix boost dependencies
Merge pull request #303 from jafyvilla/master

Fix boost dependencies
Fixes after CR #301
Merge branch 'master' of https://github.com/Eyescale/Equalizer

Conflicts:
	eq/server/config/display.cpp
Merge branch 'master' into windowsettings
CR
Merge branch 'master' of https://github.com/Eyescale/Equalizer