Diagnostic timeout fail

When inline error handling is in effect, the CS_DIAG_TIMEOUT property determines whether Client-Library fails or retries on Client-Library timeout errors.

If CS_DIAG_TIMEOUT is CS_TRUE, Client-Library marks a connection as dead when a Client-Library routine generates a timeout error.

If CS_DIAG_TIMEOUT is CS_FALSE, Client-Library retries indefinitely when a Client-Library routine generates a timeout error.