6967433: dashed lines broken when using scaling transforms.
Summary: converted pisces to floating point. Also, using better AA algorithm
Reviewed-by: flar

Reviewed-by: ceisserer, bae

Reviewed-by: bae, igor, prr

Reviewed-by: darcy, weijun

Summary: Only recreate crossings array, if there actually exists one before.
Reviewed-by: flar, tdv

Reviewed-by: igor, prr
Contributed-by: Nrkennke <roman.kennke@sun.com>

Reviewed-by: campbell, flar
Contributed-by: NGoogle <yamauchi@google.com>

Reviewed-by: igor, flar
Contributed-by: Nrkennke <roman.kennke@aicas.com>

Reviewed-by: avu, flar
Contributed-by: NGoogle <yamauchi@google.com>

Reviewed-by: igor, flar
Contributed-by: NRed Hat <omajid@redhat.com>