Missing definition of SQL_C_BIGINT

[mloskot]

There are these constants defined:

https://github.com/microsoft/ODBC-Specification/blob/acc916fe22ff5cf10ccdfaa7418b328c8f25f770/Windows/inc/sqlext.h#L591-L594

But, there is number of ODBC documentations:

• https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ms724344(v=vs.85)
• https://www.ibm.com/docs/en/db2-for-zos/11?topic=conversion-c-sql-data-types
• https://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc20116.1570/html/aseodbc/CACFDIGH.htm
• https://docs.oracle.com/cd/E21901_01/timesten.1122/e21637/compiling.htm#TTCDV178

where SQL_C_BIGINT constant is mentioned.

It would be good if the ODBC specification clarifies status of the SQL_C_BIGINT.