Fix a couple of spelling errors in lib/

lib/Makefile.vxworks

lib/arpa_telnet.h

lib/axtls.c

lib/connect.c

lib/cookie.c

lib/curl_sspi.h

lib/ftp.c

lib/getinfo.c

lib/hostip.h

lib/http_negotiate.c

lib/http_negotiate_sspi.c

lib/imap.c

lib/inet_ntop.c

lib/inet_pton.c

lib/ldap.c

lib/mprintf.c

lib/multi.c

lib/parsedate.c

lib/pop3.c

lib/progress.c