Changed the handling of variadic intrinsics a bit. Removed the -fp80 option and made real be 80bit floats on X86, this is what the D spec really says it should be and fixes a bunch of issues. Changed the handling of parameter attributes to a bit more generalized approach. Added sext/zext attributes for byte/short/ubyte/ushort parameters, fixes #60 . Parameter attribs now properly set for intrinsic calls if necessary. Made the tango.math.Math patch less intrusive. Fixed/added some mini tests.

--- a/dmd/idgen.c	Fri Aug 01 01:12:33 2008 +0200
+++ b/dmd/idgen.c	Fri Aug 01 17:59:58 2008 +0200
@@ -218,9 +218,11 @@
     { "va_intrinsic" },
     { "no_typeinfo" },
     { "no_moduleinfo" },
-    { "alloca" },
-    { "va_start" },
-    { "va_arg" },
+    { "Alloca", "alloca" },
+    { "vastart", "va_start" },
+    { "vacopy", "va_copy" },
+    { "vaend", "va_end" },
+    { "vaarg", "va_arg" },
 
     // For toHash/toString
     { "tohash", "toHash" },