umask is ignored when extracting libraries

[tmssngr]

Describe the bug
A user of our SWT-based application reported following bug: he sets the umask to 0077 and the SWT libraries are still created with 0755 permissions instead of the expected user-only 0700.

To Reproduce

• invoke umask 077 in a terminal (Linux, MacOS)
• launch any SWT based application from the terminal

Expected behavior
The temp files for the SWT binaries should consider the set umask.

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS