* README.md: Mention WolfSSL
* configure.ac: Check for WolfSSL
* libwget/Makefile.am: Conditionally add WolfSSL to libwget
* libwget/ssl_wolfssl.c: New file with WolfSSL implementation
* po/POTFILES.in: Add libwget/ssl_wolfssl.c

./configure --without-gnutls --with-wolfssl