Throw away the myCtxVar{Set,Get} abomination and introduce

a pphrase_cb_arg_t struct instead, for passing stuff between
ssl_pphrase_Handle and ssl_pphrase_Handle_CB. Prefer struct
members instead of using additional local variables, to make
the data flow more transparent. (Doesn't "vastly simplify"
the code yet, but hopefully we'll get there when further
stripping down ssl_pphrase_Handle.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1546804 13f79535-47bb-0310-9956-ffa450edef68