Standing water fill pattern and water "barriers"

[RudyTheDev]

This adds a fill pattern for standing water for landuse=reservoir/natural=water;water=reservoir:

Also the same for a fountain as area:

Additionally barrier-like stroke for man_made=breakwater and man_made=groyne ways and areas.

Such as this off-shore example:

[bhousel]

Thanks @RudyTheDev!