Added some explanation and links to --llvm-wide-opt explanation
in the man page and README.llvm.

git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@22053 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Turned off testing on IS size W and B (C was already off) as B times out on
one of our fastest testing machines and will probably do so until someone looks
deeper into IS.  Size W was turned off because it was seen as not providing much
more information than S and A do and is not trivial to run, as IS set up is so
slow, especially on our fastest testing machine.  Size A more clearly
demonstrates the effort that needs to be made on set up, and so it was decided
to keep A, even though its performance in some cases takes longer than the ~5
timeout specified for the other NPB benchmarks.  To reflect this and in an
effort to not get nosiy data, the timeout for IS is larger than the other
benchmarks.  It is expected that as IS is improved, this timeout will be changed
to match the others.

Additionally, turned off graph generation for all sizes that are not run.



git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@22054 3a8e244f-b0f2-452b-bcba-4c88e055c3ca