Fixed wrong column buffer size computation for strings, rowids and longs when using OCI_CHARSET_WIDE or OCI_CHARSET_MIXED on unixes platforms
Fixed wrong column buffer size computation for strings, rowids and longs when using OCI_CHARSET_WIDE or OCI_CHARSET_MIXED on unixes platforms

kornefalk/ocilib2017,alexeyvo/ocilib,lawrence200801/ocilib,kornefalk/ocilib2017,vrogier/ocilib,lawrence200801/ocilib,vrogier/ocilib,kornefalk/ocilib2017,ljx0305/ocilib,ljx0305/ocilib,alexeyvo/ocilib,ljx0305/ocilib,Convey-Compliance/ocilib,Convey-Compliance/ocilib,vrogier/ocilib,vrogier/ocilib,alexeyvo/ocilib,Convey-Compliance/ocilib,lawrence200801/ocilib