More constant definition cleanup in our test code.

* subversion/tests/libsvn_fs_x/string-table-test.c
  (large_string_table_body,
   many_strings_table_body): Use APR macros to define 64 bit constants.

* subversion/tests/libsvn_subr/packed-data-test.c
  (test_uint_stream): Same.  Also use APR constants of min/max values.

* subversion/tests/libsvn_subr/string-test.c
  (test24,
   test_base36): Ditto.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1582401 13f79535-47bb-0310-9956-ffa450edef68
* tools/dev/unix-build/Makefile.svn: In my custom build script, make it
   possible to start httpd with an extra custom configuration file.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1582402 13f79535-47bb-0310-9956-ffa450edef68