Fix TARGET configuration when configuring and installing using

APACI configure. TARGET now defines the basename of the configuration
file, startup script, manual page, etc. log_error_core() now reports
the server binary name given by argv[0]. TARGET can now also be defined
with --target=TARGET parameter passed to APACI configure.
Reviewed by:	Jim Jagielski, Randy Terbush, Ralf Engelschall


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@82424 13f79535-47bb-0310-9956-ffa450edef68