[Ecls-list] ecl.dll dynamic loading

[red plait]

Hi
It seems that under xp (both 32 and 64 bit) elc.dll cannot be loaded
with LoadLibrary: http://redplait.blogspot.com/2012/05/ecldll.html
I think __declspec(thread) for GC_thread_key must be rewritten to use
explicit TLS allocation scheme to solve this problem