Add DJP Windows MySQL Backup howto to the docs

As a one-off, create a MySQL user called backup with a password of backup that has full rights to the database:

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysql.exe -u root -p -e "CREATE USER 'backup'@'localhost' IDENTIFIED BY 'backup'";

Grant the backup user full privileges on the database called openremdatabasemysql:

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysql.exe -u root -p -e "GRANT ALL PRIVILEGES ON openremdatabasemysql .* TO 'backup'@'localhost'";

Grant the backup user privileges to create databases:

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysql.exe -u root -p -e "GRANT CREATE ON *.* TO 'backup'@'localhost'";

Reload the privileges to ensure that MySQL registers the new ones:

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysql.exe -u root -p -e "FLUSH PRIVILEGES";

To backup the contents of the database from the command line to a file called backup.sql (note that the lack of spaces after the "-u" and "-p" is not a typo):

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysqldump.exe -ubackup -pbackup openremdatabasemysql > backup.sql

To restore the database, assuming that it doesn't exist anymore, first it needs to be created:

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysql.exe -ubackup -pbackup -e "CREATE DATABASE openremdatabasemysql";

Then restore the contents of the database from a file called backup.sql:

C:\Program Files\MySQL\MySQL Server 5.6\bin\mysql.exe -ubackup -pbackup openremdatabasemysql < backup.sql

An example DOS batch file to back up the contents of the openremdatabasemysql database using a time stamp of the form yyyy-mm-dd_hhmm, zip up the resulting file, delete the uncompressed version and then copy it to a network location (the network copy will only work if the user that runs the batch file has permission on the network):

@echo off
For /f "tokens=1-4 delims=/ " %%a in ('date /t') do (set mydate=%%c-%%b-%%a)
For /f "tokens=1-2 delims=/:" %%a in ('time /t') do (set mytime=%%a%%b)

"C:\Program Files\MySQL\MySQL Server 5.6\bin\mysqldump.exe" -ubackup -pbackup openremdatabasemysql > F:\OpenREMdatabase\backup\%mydate%_%mytime%_openremdatabasemysql.sql

"C:\Program Files\7-Zip\7z.exe" a F:\OpenREMdatabase\backup\%mydate%_%mytime%_openremdatabasemysql.zip F:\OpenREMdatabase\backup\%mydate%_%mytime%_openremdatabasemysql.sql

del F:\OpenREMdatabase\backup\%mydate%_%mytime%_openremdatabasemysql.sql

copy F:\OpenREMdatabase\backup\%mydate%_%mytime%_openremdatabasemysql.zip "\\Srv-mps-001\xls_protect\PATDOSE\OpenREMbackup\"

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