Add HTTPS patches from master
    
    Pull in a stack of patches to add support for accessing servers via
    HTTPS proxies, such as python-kdcproxy or the KDC Proxy Service on a
    properly-outfitted Windows box.  Pull in the patch to move the logic out
    of libkrb5 proper and into a loadable plugin to avoid linking our local
    applications against our libkrb5 against libssl against the installed
    copy of libgssapi_krb5 and our local libkrb5support.  Adjust a couple of
    other patches to apply correctly after them.