srf_info.test cannot handle VPATH builds

[benmenadue]

Hi,

srf_info.test can't handle VPATH builds because it assumes that $srcdir is a relative path:

io_lib/tests/srf_info.test

Line 3 in 3ca1202

cp ../$srcdir/data/proc.srf .

I'm assuming that handling is because of the cd on the previous line. Adding a check to only prepend the ../ if $srcdir is relative fixes this for me.

Cheers,
Ben