[PATCH] composite_type and TYPE_QUALS

[Andrew Pinski]

While trying to fix IMA, I came across the problem where composite_type
does not return a type which has the TYPE_QUALS of the other type given
to the function,  this patch fixes this problem, I could not find a non
IMA testcase for reproducing this failure.

OK? Bootstrapped on powerpc-apple-darwin with no regressions.

Testcase (which only happens you fix IMA):
file1.c:
typedef int *g;
void f(const g*);
void f(const g*a)  {}
file2.c:
typedef int *g;
void f(const g*);

I cannot remember which order you should list the files to get the 
failure
but after duplicate_decls is called the olddecl was changed so the 
pointer
to int was no longer a constant.


ChangeLog:

	* c-typeck.c (composite_type):
	<case POINTER_TYPE>: Build a qualified type of
	the new type.
	<case ARRAY_TYPE>: Likewise.
	<case FUNCTION_TYPE>: Likewise.

Patch:
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