curl_global_cleanup().  Update corresponding man pages...

Improve the logic in curl_global_cleanup() and curl_global_init() so that
they are not called twice if the application libraries have been
initialized and make sure to reset the init flags in curl_global_cleanup().

about this subject

first resume was used on all files instead of being reset between each file.
As found by Björn Stenberg.

  with spaces like when -F is used.

only available in CVS

to check libs and include files in, we don't check the default places first!

the matter

reply data section

cases and fixed FTP ranges

as they depend on the resolving of that name. It seems this mistake is
happening from time to time and people have a hard time finding out why
configure can't detect their gethostbyname_r()-setup.

resumed downloads