d: Update code formatting in a consistent style.

d: Update code formatting in a consistent style.

gcc/d/ChangeLog:

	* d-attribs.cc: Update code formatting in a consistant style.
	* d-builtins.cc: Likewise.
	* d-codegen.cc: Likewise.
	* d-compiler.cc: Likewise.
	* d-convert.cc: Likewise.
	* d-diagnostic.cc: Likewise.
	* d-frontend.cc: Likewise.
	* d-lang.cc: Likewise.
	* d-longdouble.cc: Likewise.
	* d-port.cc: Likewise.
	* d-spec.cc: Likewise.
	* d-tree.h: Likewise.
	* decl.cc: Likewise.
	* expr.cc: Likewise.
	* longdouble.h: Likewise.
	* modules.cc: Likewise.
	* toir.cc: Likewise.
	* typeinfo.cc: Likewise.