fix a regex (necessary for fibon benchmarks)

nofib-analyse/Slurp.hs

@@ -96,7 +96,7 @@ Various banner lines:
 
 -- NB. the hyphen must come last (or first) inside [...] to stand for itself.
 banner_re :: Regex
-banner_re = mkRegex "^==nofib==[ \t]+([A-Za-z0-9_-]+):[ \t]+(size of|time to link|time to run|time to compile|time to compile & run)[ \t]+([A-Za-z0-9_-]+)(\\.o)?[ \t]+follows"
+banner_re = mkRegex "^==nofib==[ \t]+([A-Za-z0-9_-]+):[ \t]+(size of|time to link|time to run|time to compile|time to compile & run)[ \t]+([A-Za-z0-9/_-]+)(\\.o)?[ \t]+follows"
 
 {-
 This regexp for the output of "time" works on FreeBSD, other versions