From: Stephane Marchesin
Subject: [SDL] [Patch] inlining memcpy functions

I (finally) did some benchmarking of the misc mmx & sse blitting
functions, and found a little bottleneck in the memcpy ones : you get
~10% more performance on small surface blitting if you inline them.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40883