Possible compatibility problems with earlier versions marked with '*'.
+Fixes in ASN.1 compiler for C++ compatibility.
+
+* Changed member names "and", "or" and "and_not" in struct Z_Operator
+to "op_and", "op_or" and "op_and_not" to avoid conflict with C++.
+
Fixed problem with GNU readline detection on Redhat 7.0.
Added step-size for Scan backend handler.