Add a note clarifying that getprogname() results are not trustable in a
setugid environment. Prompted by PR 38327 discussion.
Welcome to the time_t=long long dev_t=uint64_t branch.
new files
does not return void
time_t is now __int64_t
everyone else assumes that defining "_XOPEN_SOURCE" means XPG4.2,
so remove comparisions against the numerical values "3" or "4"
Improvements and fixes from J. Vicente Carrasco sent by private mail.
PR/18067: Jason Thorpe: rlim_t needs to be unsigned.
rlim_t cannot be negative.
whitespace fix
Fix replicated typo
* Expand the CAVEATS section with a lot more detail on how to safely
  use the ctype functions.
* Use toupper((int)(unsigned char)*s)) instead of just
  toupper((unsigned char)*s) in an example.
Refer to the CAVEATS section of ctype(3) for more information.
When given negative inputs, isascii returns false.  Clarify that
it checks for the range 0 to 127, not "less than or equal to 0177".
Clarify the range of the result from toascii.
Fix a stupid typo in a comment.  Pointed out by Juergen Hannken-Illjes.
Add a missing const.
correct cut and paste error in uuid_dec_be(); le16dec -> be16dec
sync with head.
add matching END(). found via -Wa,--fatal-warnings