Fixed Environment variables checks in unicode builds
Fixed Environment variables checks in unicode builds

kornefalk/ocilib2017,ljx0305/ocilib,vrogier/ocilib,ljx0305/ocilib,Convey-Compliance/ocilib,vrogier/ocilib,vrogier/ocilib,kornefalk/ocilib2017,kornefalk/ocilib2017,Convey-Compliance/ocilib,Convey-Compliance/ocilib,ljx0305/ocilib,vrogier/ocilib