1. symlinked homedirs will kill ~userdirs.

    Fixed by the addition of Jim Jagielski's code that he graciously
    beat over Jason and mine's head but did not get through for me.
    We now dowa chdir() to the DOCROOT be that the built one for
    users, or the compiled in DOCROOT. I've resisted the idea of
    a chdir() here, but I see no other way to make this work in a
    situation where the user's homedir taken from the passwd file
    does not agree with the filesystems true mapping. Looking at
    using realpath() or some other similar solution appears to just
    do a chdir() which was the whole point of avoiding this in the
    past. Since opening and reading a directory as root seems to be
    a read-only operation, I see no security whole here. Comments
    welcome.

2.  initgroups() on Linux 2.0.x clobbers gr->grid.

    initgroups() call removed from wrapper code until we can
    establish portable fix here.

3.  CGI command lines paramters problems

    Code in call_exec() was not properly passing arguments in argv[]
    if you want to pass arguments via '+' separated URL.
    Taking the hint from Jake Buchholz I have changed create_argv()
    to accept a variable number of parameters. This is the only
    change to the server code and is included first in the
    patch below.

4.  pw-pwdir for "docroot check" still the httpd user's pw record.

    Major order problem in wrapper code.

5. strchr() returns a char*, not a char


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77315 13f79535-47bb-0310-9956-ffa450edef68