Version 0.5
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Improved timing - mode 7 bodged to exactly correct cycle count
Interlace timing accounted for in modes 0-6.
Interrupt latency added
fixed window.cc (took out 'virtual' on most functions) - now OK in gcc 2.7.0
Changed default position of g++ includes to /usr/include/g++

Version 0.6
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A few fiddles with the config for linux - now compiles on 2.7.0 with the ELF-GCC
release; but could cause probs for older releases.

Stated adding sound card.
