configure: Report elm_prefs_cc path in configure summary.

Usefull for cross-compiling or other use cases where you try to
set the path.
configure: Report elementary_codegen path in configure summary

Another bianry path we might set being displayed in the summary.
entry: fixed shadow variable build warnings.
move all eo files to new namespace syntax
update against latest eolian changes
Merge branch 'master' of https://git.enlightenment.org/core/elementary into eo_mvc
elm_(view_/list_).eo:  move eo files to new namespace syntax.