De-globalize regcomp inversion lists.

De-globalize regcomp inversion lists.

These lists are declared at file scope so will be global unless
made static.  Actual use of these lists is via the various PL_xxx
global variables that point to them and that (except for
NonL1_Perl_Non_Final_Folds_invlist) are initialized in
Perl_re_op_compile in regcomp.c (but not in its incarnation as
ext/re/re_comp.c).

So change the lists to be static, and also skip declaring and
initializing them in ext/re/re_comp.c except for the one case that
is actually used in the extension version.