Fixed bug #42134 (oci_error() returns false after oci_new_collection() fails).
Fixed bug #41711 (Null temporary lobs not supported).
Fixed bug #41594 (Statement cache is flushed too frequently).
-Enable statement cache for non-persistent connections.
Fixed segfault on rebindinging and rexecuting a statement with LOBs.
Fixed compile failure in ZTS mode when collections support is missing.
+Enabled statement cache for non-persistent connections.
+Improved oci_password_change() to close persistent connections on shutdown (to update hashed connection details).
Various minor improvements.
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