Use svn_hash_gets and svn_hash_sets.

* subversion/libsvn_subr/auth.c
* subversion/libsvn_subr/cmdline.c
* subversion/libsvn_subr/compat.c
* subversion/libsvn_subr/config.c
* subversion/libsvn_subr/config_auth.c
* subversion/libsvn_subr/deprecated.c
* subversion/libsvn_subr/dso.c
* subversion/libsvn_subr/hash.c
* subversion/libsvn_subr/io.c
* subversion/libsvn_subr/mergeinfo.c
* subversion/libsvn_subr/opt.c
* subversion/libsvn_subr/properties.c
* subversion/libsvn_subr/simple_providers.c
* subversion/libsvn_subr/ssl_client_cert_providers.c
* subversion/libsvn_subr/ssl_client_cert_pw_providers.c
* subversion/libsvn_subr/ssl_server_trust_providers.c
* subversion/libsvn_subr/subst.c
* subversion/libsvn_subr/types.c
* subversion/libsvn_subr/username_providers.c
* subversion/libsvn_subr/utf.c
* subversion/libsvn_subr/win32_crypto.c
* subversion/libsvn_subr/xml.c


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1460163 13f79535-47bb-0310-9956-ffa450edef68