rename krb5_pk_init_openssl_ctx to krb5_pk_init_ctx fix win2k error handling
rename krb5_pk_init_openssl_ctx to krb5_pk_init_ctx
fix win2k error handling


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@13092 ec53bebd-3082-4978-b11e-865c3cabbd6b

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