CONTRIBUTORS file
gas.Abs: doc typo
added sbinet to contributors file
Made more portable, with better behaviour in go1.1+.

In go 1.1, the filepath.SplitList does exactly what we want, with some
special logic where it's needed (eg: Windows).

In go 1, SplitList doesn't exist, so the old behaviour (strings.Split) is
used instead with os.PathListSeparator, making it again more portable
than before.

The new code should work everywhere go does, instead of arbitrarily
limiting support to linux and windows.
Whoops, forgot to actually test in go1. Now fixed.
included cookieo9 into CONTRIBUTORS file
Update CONTRIBUTORS

Added email.
Merge pull request #6 from cookieo9/patch-1

Update CONTRIBUTORS
Merge branch 'andrebq/master' into 'cookieo9/master'