Add a couple more texture-related break cmds.

These prevent it from breaking too early so the preview is more likely to
be complete and viewable.
Do not specify max LOD for no-mipmap textures.

Fixes #6077, incorrect filtering with no mipmaps in Popolocrois.
This was causing it to use the mag filtering setting, even when minifying.
Make the EstimateDrawingSize() simpler
Add missing lcutoff and lconv
Merge pull request #6082 from raven02/patch-55

Add missing lcutoff and lconv
Merge pull request #6067 from raven02/patch-56

Make the EstimateDrawingSize() simpler
Merge remote-tracking branch 'upstream/master' into fps2