portable FastCriticalSection implementation

Gennady, these patches you've submitted modify both the windows and linux core, so they would need to be reviewed by the dcplusplus team. We cannot apply changes to linuxdcpp without them also being applied to upstream dc++. The only one that is linux specific is bug #617021, which me or Razzloss can review.

However, your patches/branch are for linuxdcpp which is not up to date with the latest dc++ core. You may have to redo your patches for the dc++ core. But before you do that, I would suggest waiting on a response from the dc++ team to see if they would be interested in your patches before you go through that effort.

Poy et al, can you take a look at these patches that Gennady submitted (this and the other bugs he filed)? They probably won't apply, but you can get an idea from the diff and if it's something that you approve of either Gennady or I can port it to the new core.

I completely removed CriticalSection stuff from StrongDC++ and use only following typedefs:

typedef boost::recursive_mutex CriticalSection;
typedef boost::detail::spinlock FastCriticalSection;
typedef boost::lock_guard<boost::recursive_mutex> Lock;
typedef boost::lock_guard<boost::detail::spinlock> FastLock;

I agree, these typedefs are better than my patch.
The only drawback I see is that recursive_mutex and lock_guard are not garanteed to be header-only.

Will be integrated with next core upgrade.

Fixed in DC++ 0.780.