[svn r98] Added support for std.c.stdlib.alloca via pragma(LLVM_internal, "alloca").

Added support for array .sort and .reverse properties.
Fixed some bugs with pointer arithmetic.
Disabled some DMD AST optimizations that was messing things up, destroying valuable information.
Added a KDevelop project file, this is what I use for coding LLVMDC now :)
Other minor stuff.

lphobos/std/c/stdlib.d

@@ -42,6 +42,7 @@ struct lldiv_t { long quot,rem; }
 
     int system(char *);
 
+    pragma(LLVM_internal, "alloca")
     void *alloca(uint);	///
 
     void *calloc(size_t, size_t);	///