Merge 'load_namespaces' into 'DBIx-Class-current'

Merge 'load_namespaces' into 'DBIx-Class-current'

r11157@evoc8 (orig r2602):  blblack | 2006-07-23 14:16:27 -0500
new feature branch load_namespaces
r11159@evoc8 (orig r2604):  blblack | 2006-07-23 14:47:36 -0500
docs + draft untested code for load_namespaces
r11161@evoc8 (orig r2606):  blblack | 2006-07-23 16:25:42 -0500
overridable namespaces and overridable base resultset class
r11255@evoc8 (orig r2630):  blblack | 2006-07-27 00:57:48 -0500
load_namespaces now does result_class and "+" syntax as well
r11256@evoc8 (orig r2631):  blblack | 2006-07-27 00:58:36 -0500
tests for load_namespaces
r11258@evoc8 (orig r2633):  blblack | 2006-07-27 01:08:10 -0500
proxy result_class, and fix load_namespace to use it correctly
r11265@evoc8 (orig r2640):  blblack | 2006-07-27 13:15:25 -0500
Module::Find is a real dep in Build.PL
r13039@evoc8 (orig r2647):  blblack | 2006-07-29 19:39:45 -0500
re-word options/code/pod to be less confusing wrt ResultSource vs source-definition class/file
r13040@evoc8 (orig r2648):  blblack | 2006-07-29 19:47:08 -0500
rename the load_namespaces tests
r13041@evoc8 (orig r2649):  blblack | 2006-07-31 01:22:26 -0500
load_namespaces arrayref support
r13121@evoc8 (orig r2656):  blblack | 2006-08-03 18:32:34 -0500
small improves to doc/code clarity
r13393@evoc8 (orig r2724):  blblack | 2006-08-23 13:59:32 -0500
remove result_class stuff from load_namespaces, better to not do it than to do it wrong
r13394@evoc8 (orig r2725):  blblack | 2006-08-23 14:39:31 -0500
rename Source to Result, because that is what it should be called