During the last commit of splash2 benchmark it seems before committing
when we ran "make clean", it effectively undid what the patch at below
link did
http://www.capsl.udel.edu/splash/Download.html
Fix this since without this it is not possible to build the arcane
splash2 benchmark.
While at it also add the libpthread static library amd m5op_x86
for matrix multiplication test code as well.
Note that the splash2 benchmark code does not comply with gem5
coding guidelines. Academic guys never seem to follow 80 columns
and no whitespace guideline :(.
