krbconfig.c, Makefile.in: Removed krbconfig.c; it contained global

krbconfig.c, Makefile.in: Removed krbconfig.c; it contained global
	variables which are no longer used.

recvauth.c: Removed the global extern of krb5_kdc_default_options,
	which wasn't being used anyway.

mk_req.c (krb5_mk_req): Replace use of krb5_kdc_default_options with
	context->kdc_default_options.

gc_frm_kdc.c: Remove the global extern of krb5_kdc_req_sumtype, which
	wasn't being used anymore anyway.

send_tgs.c (krb5_send_tgs_basic): Remove use of the global variable
	krb5_kdc_req_sumtype, and use the kdc_req_sumtype in the context
	structure instead.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@7291 dc483132-0cff-0310-8789-dd5450dbe970