Pyd support for Linux

[Kirk McDonald]

With a bit of fiddling, I have gotten Pyd working on Linux using GDC 0.20.

http://pyd.dsource.org/

SVN repository:
http://svn.dsource.org/projects/pyd/trunk

Some notes:

(1) StackThreads doesn't work on GDC. Therefore, Pyd's support for 
automatically wrapping opApply doesn't work on Linux. I had already 
wrapped all of the uses of StackThreads in some version statements, so 
it was a simple matter to tell CeleriD to just not use StackThreads when 
compiling with GDC.

(2) Whenever I link an .so together using GDC, it gives me this warning:

/usr/bin/ld: warning: creating a DT_TEXTREL in object.

I have no idea what this means, and the resulting .so works fine, but 
it's still ominous. Anyone have any insight?

(3) GDC doesn't support using the .ptr property of delegates as an 
lvalue (and, presumably, the .funcptr property, though I haven't tried 
it). Using .ptr and .funcptr as lvalues is useful when emulating 
pointers to member functions (as Pyd does). I have fallen back on the 
old struct/union trick for now.

-- 
Kirk McDonald
Pyd: Wrapping Python with D
http://pyd.dsource.org