gssapi compilation errors on Windows

gssapi compilation errors on Windows

src/Makefile.in:  generate lib/gssapi/spnego/Makefile

src/lib/gssapi/Makefile.in: build mechglue and spnego

src/lib/gssapi/krb5/init_sec_context.c: do not include
kdc only symbols on windows

src/lib/gssapi/mechglue/g_utils.c: no strings.h on Windows

src/lib/gssapi/mechglue/Makefile.in: construct mechglue.lst

src/lib/gssapi/spnego/Makefile.in: construct spnego.lst

src/lib/gssapi/spnego/spnego_mech.c: k5-int.h must be
included before krb5.h in order to prevent mixed definitions
of time_t on windows

ticket: new
tags: pullup

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@18259 dc483132-0cff-0310-8789-dd5450dbe970