creates and returns a doublebuffer 'belonging' to owner; we need to associate PixelBuffers to surfaces
due to AWT 1.1 requirements (definately for Navigator, possibly also for MSJVM).
Add a new rectangle to the dirty list; returns false if the
region fell completely within an existing rectangle or set of
rectangles (ie did not expand the dirty area)
Same as drawPicture, but only uses the alpha channel of the Picture, and is allowed to destructively modify the RGB
channels of the Picture in the process.
Calculates the NTLMv2 Response for the given challenge, using the
specified authentication target, username, password, target information
block, and client challenge.
Implementation of an unsynchronized hash table, with one or two
keys, using Radke's quadradic residue linear probing instead of
buckets to minimize object count (less allocations, faster GC).