make width of hook checkbox LIs fluid. there's no telling what window width wacky people have their browsers

interim commit. basic form scaffold for 2 page form, gets values, presents old values if user goes back. doesn't DO stuff yet.

simplify regexp for MODULE_BUILDER_INFO_PATTERN -- no need for escaping backslashes; no need to capture.

We use a single #multistep form for data capture, module building and download.
Can now download more than one file (one at a time) and also make changes before downloading.

KNOWN ISSUES:
The #multistep stuff just doesn't handle going back very well. I have a pretty generic solution for working around this however it doesn't quite work with checkboxes. It still works pretty well.
Created a bunch more literals that need to be converted to constants

#110740, forms 2 api appears to be replacing _ with - in id fields, so updated our javascript library to account for this.

We are changing how download works as multiple files need to be downloaded for 5.x.
Prefixed several existing defines with MODULE_BUILDER_
Update code to use defines for constants rather than simply using constants bare.
Update Module Builder to Module builder where appropriate
Update t() arguments that should not be themed to be prefixed with !
Theme textual references to paths Adminster >> Site building >> Modules, etc.
Fix broken path reference for custom template file
Repalce theme_module_builder_hook_list() with #prefix and #suffix entries
Updated module_builder_process to be more forms 2 api friendly
Replace $output variable with $code in module_builder_process
Replace theme_module_builder_results() with form 2 api and #prefix #suffix entries

Moving templates and includes into their own directory so main module dir does not get totally unwieldy.