Include dev9ghzdrk into the main plugins folder, and integrate it into the build system (windows only).

Most of the work done by Rama, I just integrated the vcxproj.

Only done for vs2010, vs2008 or vs2012 will have to wait.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5595 96395faa-99c1-11dd-bbfe-3dabce05a288
DEV9ghzdrk: These files aren't needed.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5596 96395faa-99c1-11dd-bbfe-3dabce05a288
DEV9ghzdrk: Either be thread safe in the whole plugin or don't try to at all.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5597 96395faa-99c1-11dd-bbfe-3dabce05a288
DEV9ghzdrk: Fixed the bad slowness.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5598 96395faa-99c1-11dd-bbfe-3dabce05a288