[patch] add PERL_MEM_LOG to perlrun.pod

[Jim Cromie]

I noticed that PERL_MEM_LOG is not mentioned in perlrun.pod,
should it be ? if so, this patch addresses that lack.
Suggestions for better wording/focus are welcome.

I also grepped code to compare the uses to those docd in perlrun,
and noticed a few omissions, are any of these worthy of mention here ?
or are they too specific or detail oriented ? (my guess)

("PERL_BADFREE");
("PERL_BADLANG")) || atoi(p))));
("PERL_DEBUG_MSTATS"))
("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
("PERL_DESTRUCT_LEVEL");

("PERL_MADSKILLS"))) {
("PERL_RE_COLORS");
("PERL_XMLDUMP"))) {
("TMPDIR");

[Rafael Garcia-Suarez]

2009/11/23 Jim Cromie <jim.c...@gmail.com>:

> I noticed that PERL_MEM_LOG is not mentioned in perlrun.pod,
> should it be ?  if so, this patch addresses that lack.
> Suggestions for better wording/focus are welcome.

Thanks, applied, and then reworded a bit by next commit, in the hope
of making it clearer.