HACK FIX: reinline __m128i_strloadu

After f1d70dad, glibc build for i686-pc-linux-gnu with -O2 experiences
sefaults in __strstr_sse42.

https://bugs.archlinux.org/task/36556
http://sourceware.org/bugzilla/show_bug.cgi?id=15845

Readding the inline "fixes" the issue until a correct solution is found.