fix str_size link
Rename AVelem to elem and padlist to PADLIST
Consider CvWEAKOUTSIDE. Better names for CVs in edge cases.
Fix up pad name handling
Fix up pad handling
Add addr notes to heks and links in .dot output (incomplete).

Needs some kind of queuing to handle links to addr's that we don't have
an item for yet.
random TODO notes
Change ORLite prereq to DBD::SQLite
Switch to HTML labels and stack details vertically
don't use CvNAME_HEK if not defined
Use CopHINTHASH instead of cop_hints_hash for link name
Always follow CopSTASH(basecop) now we have proper ref counting
Clarify comments on ADD_LINK_ATTR_TO_* macros
Add mechanism to 'hide details' - initially cop_file duplication on threaded perls
Don't follow CopSTASH as it's not ref counted.
Use PerlEnv_getenv instead of getenv.
Begin refactoring bin/sizeme_store.pl
more refactoring of bin/sizeme_store.pl
show dangling links
drop dead code. tweak sizeme.html