MySQL authentication with user@host

MySQL authentication with user@host: user, host and pass word are
loaded from backend servers.
Host is currently handled as IPv4 address
MySQL authentication with user@host, resolved compile errors

MySQL authentication with user@host, resolved compile errors
uh_cmpfun: resolved error in NULL check

uh_cmpfun: resolved error in NULL check
set dcb->ipv4 for mysql user@host authentication

set dcb->ipv4 for mysql user@host authentication
Added localhost check in gw_find_mysql_user_password_sha()

Added localhost check in gw_find_mysql_user_password_sha1().
The wilcard check is skipped if user@localhost failed
Added test file for mysql authentication (user@host, passwd)

Added test file for mysql authentication (user@host, passwd)

make -f ./makefile.mysql_users testall
Merge for Fix MySQL 5.1 server handshake
Merge "Traffic is routed to the master if no slaves available". Fix bug-129
Added USERS_HASHTABLE_SIZE

Added USERS_HASHTABLE_SIZE,  default size is 52
Merge branch 'feature-MAX-2' into develop
branch 'develop' updated from 'master'
Develop branch updated from Master
Merge branch 'fix-127' into feature-MAX-2

Conflicts:
server/core/dbusers.c
server/core/service.c
server/core/users.c
server/include/dbusers.h
server/include/users.h
server/modules/protocol/mysql_client.c
server/modules/protocol/mysql_common.c
Compile errors fixed

Compile errors fixed
Removed extra header file inclusion

Removed extra header file inclusion
Files updated for user@host mysql auth

Files updated for user@host mysql auth
Branch updated from develop

Branch updated from develop
Removed duplicated code

Removed duplicated code
At service startup service->rate_limit.last is set back to USERS_REFRESH_TIME

At service startup service->rate_limit.last is set back to
USERS_REFRESH_TIME
This allows reloading users’ table as soon as possible

Fixed mysql_users_alloc instead of users_alloc in replace_mysql_users()
and added MYSQL_USER_MAXLEN where missing
Merge branch 'master' into feature-MAX-2