Deploying PartData in engine classes

FilesList and SharedFile classes were modified to work with the new PartData. Due to the cleaner nature of PartData v2, another ~300 lines code could be dropped overall in those two classes. PartData saving/loading works. Construction/destruction works.

Deplying PartData in ed2k module

Client::DownloadInfo class was modifying to interface with the new PartData, signficently simplifying the code there (~150-line less code than before). ED2KPacket::ReqChunks packet interface was modified to work with new PartData and new Range API.

Bottom line & state of things

The application compiles and runs again (first time in a while), however, there are still remaining few runtime problems during downloading - obviously, the new PartData needs further stabilization. Current top issue seems to be PartData::getLock() method, which seems somewhat broken - works occasionally, but breaks sometimes.

Once the overall things stabilize to a state equal-to or better-than the current CVS version (over a week old), I'll commit the new stuff to CVS. Until then... wrk wrk.

Madcat, ZzZz