A valarray of an enum does not initialize to 0 so explicitly specify the
value to fill the array with. This was causing the compiler to incorrectly
report that fixed width elements in a concatenation had no size.
The following was done to remove compiler warning when using the native
compiler on OpenSolaris.
Remove the anonymous unions in tgt-vlog95/stmt.c and tgt-vvp/vvp_process.c.
Use UINT_MAX for the maximum unsigned unsigned instead of -1 in
tgt-vvp/draw_net_input.c.
Even though lex defines yywrap() to have no arguments when %option
noyywrp is used it generates a define that takes an argument that is not
used. The compiler warned about this so remove the option and add a
dummy yywrap function.
b019c21f46