Added first support for user@x.y.z.%

Added first support for user@x.y.z.%
Code cleanup

Code cleanup
Merge branch 'develop' into MAX-268
wildcard in host printed via show dbusers

wildcard in host printed via show dbusers
Match Class C,B,A addresses

Match Class C,B,A addresses
Fixed wrong chars

Fixed wrong chars
Fix for % detection

Fix for % detection
Match for Class C,B,A in hosts with %

Match for Class C,B,A in hosts with %
Code cleanup

Code cleanup
Merge branch 'develop' into MAX-268
MySQL Authentication with wildcards in hosts

MySQL Authentication:

Added support for wildcards in hosts:

a.b.c.%
a.b.%.%
a.%.%.%
Additional tests for maxadmin and diagnostics within maxscale
Fixed a missing 'else()' from macros.cmake and used unset instead of set when clearing variables.
Included the my_config.h header before any system headers if mysql headers were used.
Added missing my_config.h header to mqfilter.c
Updated macros.cmake with different string matching parameters on searched libraries.
develop branch merged

develop branch merged
Changed old references to SkySQL to MariaDB Corporation and Gateway to MaxScale.
Added more checks for RabbitMQ library versions.
Merge branch 'develop' into MAX-268