Merged from 1.7 branch, revisions 3358-3364. This was the revert of the win32 device change, which caused most test fails, and a few test updates. Moreover, updated the reference screenshots for burnings video tests. These all seemed to be correct (just the lights test was a little strong?)

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@3365 dfc29bdd-3216-0410-991c-e03cc46cb475