Bump API version to 2.2 and package version to 2.1.0. Remove NSS and

Bump API version to 2.2 and package version to 2.1.0. Remove NSS and

	* configure.in: Bump API version to 2.2 and package version to
	2.1.0. Remove NSS and OpenSSL checks and proxy-related config. Use
	libgnutls-config to find GNUTLS.

	* libsoup-2.2.pc.in: Update, and rename from soup-2.0.pc

	* libsoup/Makefile.am: s/2.0/2.2/ everywhere. Remove NSS, OpenSSL,
	and libsoup-ssl-proxy stuff.

	* libsoup/soup-ssl-proxy.c
	* libsoup/soup-nss.[ch]
	* libsoup/soup-openssl.[ch]: gone

	* libsoup/soup-ssl.c: remove NSS and OpenSSL bits

	* tests/Makefile.am (get_LDADD, timeserver_LDADD,
	auth_test_LDADD): Update libsoup version