implemented Time based blind SQL injection now is a single test file
within the lib/techniques/ folder.
Renamed lib/techniques/inference to lib/techniques/blind, it is more
approriate and adapted the rest of the libraries.
Updated ChangeLog file.
entries also if the database name is not provided by using the current
database on MySQL and MSSQL, the 'public' scheme on PostgreSQL and the
'USERS' TABLESPACE_NAME on Oracle.
Minor bug fix so that when the user provide as SELECT statement to be
processed an asterisk, now it also work if in the FROM there is no
database name specified.
Minor layout adjustments.
Added method to test for Time based blind SQL injection query stacking
on the affected parameter a SLEEP() or similar DBMS specific function.
Adapted libraries, plugins and XML with the above changes.
Minor layout adjustments.
* Minor enhancement to be able to specify the number of seconds to wait between each HTTP request.
* Minor bug fix to handle session.error and session.timeout in HTTP requests.
* Updated documentation.
