New class: db_mysqli_v4.0.1

- Updated documentation
- Better naming standards in constants
- Better PHPDocumentor
Stable versions updated with new db_mysqli version
Minor improvements and bug fix

- Fixed bug when keepLiveLog was enabled
- Better documentation
- Documentation now integrates better with ZS
Fix for empty string datatype (Not tested yet)
Posibility to establish more than 1 connection

- Each object creation will call mysql_connect, which will establish a
connection to MySQL based on host, user, passwd, dbname and port. If
another credentials than the already stored connection comes in, a new
singleton connection is made. From now on, they are both available.
- Better documentation.
- Updated readme.
- Updated constant names in order to not to conflict with PHP's constant
names.
Better documentation
Better documentation

Still pendant: get start and end transaction functions out of __call
More tests and some benchmarks
Merge branch 'master' into db_mysqli_v4.0.1
Better time control in examples
Updated documentation and fixed a lot of possible errors
Last bug fixes and better documentation
Updated readme with disclaimer and usage information
Merge branch 'db_mysqli_v4.0.1'