Merge ioq3 commit 7c04002

Simplify previous patch.
Merge ioq3 commit 11e83b2

Oops, fix typo.
Merge ioq3 commit 027af8e

Simplify RE_StretchRaw() with RE_UploadCinematic() and RB_InstantQuad2().
Merge ioq3 commit fbe56e4

Some minor cleanup.
Merge ioq3 commit 61248cb

Merge branch 'HEAD' of https://github.com/ioquake/ioq3.git
Merge ioq3 commit fb6b08b

Merge branch 'HEAD' of https://github.com/ioquake/ioq3.git
Merge ioq3 commit e6e0d47

Fix clampmapped images being always treated as sRGB.
Merge ioq3 commit f789cff

Merge branch 'HEAD' of https://github.com/ioquake/ioq3.git
Merge ioq3 commit 8aa6efe

Fix origin returned by IQM's LerpTag

It use to return pose joint's offset from base at the lerped frame, now it returns the joint's origin at the lerped frame.

Patch by Axel Isouard and Zack Middleton.
Merge ioq3 commit fd937a4

Merge branch 'master' of https://github.com/ioquake/ioq3
Merge ioq3 commit 89ee8b0

Fix size reserved for IQM jointMats (allocated more than used)
Merge ioq3 commit b009528

Fix displaying demo name when loading demo