Add support for EINTR in client.
Add support for EINTR in client.

[Issue#]     N/A
[Bug]        Poll did not support EINTR code. This error
             may break communication between security-server and client.
[Solution]   Add support for EINTR.

[Verification] Compile, run tests.

Change-Id: I0c052f3895f351adf80908db0b7c1ac826f3c0e0

pohly/security-manager,Samsung/security-manager,Samsung/security-manager,Samsung/security-manager,pohly/security-manager,pohly/security-manager