Added import of library "system" to the SICStus Prolog 4 config file in order to be able use the predicate environ/2.
Added import of library "system" to the SICStus Prolog 4 config file in order to be able use the predicate environ/2.

git-svn-id: 4c7b768bc2e2a56aa1c56b1b5a9454ba68342430@4782 ac9c905b-388a-4ddf-9b6a-4063a022bc57

LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2