g_strdup the response headers when adding them to the hash

g_strdup the response headers when adding them to the hash

2001-05-16  JP Rosevear  <jpr@ximian.com>

	* src/soup-core/soup-headers.c (soup_headers_parse): g_strdup the
	response headers when adding them to the hash

	* src/soup-core/soup-context.c (soup_context_get): ditto

	* src/soup-core/soup-context.h: constify uri passed to
	soup_context_get

	* src/soup-core/soup-env.h (soup_env_free): new protos

	* src/soup-core/soup-env.c (soup_env_set_address): new accessor to
	set url to access for service
	(soup_env_get_address): ditto