soup-auth-ntlm: get rid of separate SSO states
soup-auth-ntlm: get rid of separate SSO states

Use a single boolean to track whether we're using single-sign-on
(/usr/bin/ntlm_auth) rather than having two parallel sets of
SoupNTLMStates.

jwendell/libsoup,Distrotech/libsoup,fanc999/libsoup,fanc999/libsoup,jwendell/libsoup,jwendell/libsoup,fanc999/libsoup,jwendell/libsoup,fanc999/libsoup,Distrotech/libsoup,jwendell/libsoup,fanc999/libsoup,Distrotech/libsoup,Distrotech/libsoup,Distrotech/libsoup