devel/cdecl: update to 3.4.

Static & type-qualified arrays
Added support for C99 static and type-qualified array function arguments, e.g.:

void f( int a[static const 10] );

Variable length arrays
Added support for C99 variable length array function arguments, e.g.:

void f( int a[*] );
void g( int a[const *] );

Help command-line argument
Now prints the help message and exits if the first command-line argument is "help".

Fixed reference to array
The generated gibberish for "reference to array" has been fixed.