Buildfix for Symbian
Merge pull request #608 from thefarcry118/master

compiler warning and consts
Fix missing menu button and character in The Legend Of Heroes - Trails In The Sky
Make OpenGL always draw something. Where there is no game, display the PPSSPP logo screen.
Add hack for X11 user which can have a crash when opening the first dialog and Gl is drawing.
Remove the "open file" dialog automatic display on startup, very annoying.
Merge pull request #610 from Xele02/qt_work

[Qt-desktop] Make OpenGL always draw something, fix dialog crash.
Merge pull request #609 from raven02/master

Fix missing menu button and character in the Legend Of Heroes - Trails In The Sky
Don't hash vertex buffers every frame (TCP-style backoff up until every 16th)
Saves quite a bit time otherwise spent in CityHash, blowing the dcache every time.
Make it obvious that we do support XB360 controllers (Windows).
Merge pull request #611 from xsacha/master

Buildfix for Symbian
implemented TODO comment