Removed autoconf-generated files

The autoconf generated files shouldn't be in the repo.
Instead use ./autogen.sh to regenerate them after checkout.
Small fixes for Sun Studio compiler (Solaris arch)

Removing GCC-specific features to enable compilation in
Sun Studio 11 & Solaris Studio 12 on Solaris.

Signed-off-by: Michal Ludvig <mludvig@logix.net.nz>
Use verbatim path with "load" command.

Prior to this commit "load /path/blah.f" didn't work because
"load" always added the ".f" extention to the provided input.
That's confusing - if a path to a file is given it should be
used as is. This commit removes appending .f to the load arg.

Note that the fallback, which is loading workload defs from
the files installed under /usr/local/... is not changed and
"load webserver" still works provided webserver.f  is under
/usr/local/share/filebench/workloads/ (or as installed).

Signed-off-by: Michal Ludvig <mludvig@logix.net.nz>