Use normalization the equality comparisons instead of loose regular
expressions to determine the type of an argument of a test function.
Now declarations are parsed in a stricter way: there can't be ignored junk
at the beginning or at the end. For example, `long long unsigned int x`
was accepted as a test function argument (but not `long long unsigned x`),
although this was misleading since the value was truncated to the range of
int. Now only recognized types are accepted.
The new code is slightly looser in that it accepts `char const*` as well as
`const char*`.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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