[scponly] scponly and umask

[Ken]

Applied sftpfilecontrol patch to OpenSSH-Server and set "SftpUmask
007","SftpPermitChmod no", but user with scponlyc shell who uploads a
file can still chmod owned files and permission mask appears to ignore
umask directive and depend on the sftp client default.

OpenSSH_5.1p1+sftpfilecontrol-v1.3,
OpenSSL 0.9.8e-fips-rhel5,
scponly-4.8 w/ --enable-winscp-compat --enable-sftp-logging-compat
--enable-rsync-compat --enable-chrooted-binary

Ken