rename imported files to preface with underscore; rerun grunt dist

less/bootstrap.less

 // Core variables and mixins
-@import "variables.less";
-@import "mixins.less";
+@import "_variables.less";
+@import "_mixins.less";
 
 // Reset and dependencies
-@import "normalize.less";
-@import "print.less";
+@import "_normalize.less";
+@import "_print.less";
 
 // Core CSS
-@import "scaffolding.less";
-@import "type.less";
-@import "code.less";
-@import "grid.less";
-@import "tables.less";
-@import "forms.less";
-@import "buttons.less";
+@import "_scaffolding.less";
+@import "_type.less";
+@import "_code.less";
+@import "_grid.less";
+@import "_tables.less";
+@import "_forms.less";
+@import "_buttons.less";
 
 // Components
-@import "component-animations.less";
-@import "dropdowns.less";
-@import "button-groups.less";
-@import "input-groups.less";
-@import "navs.less";
-@import "navbar.less";
-@import "breadcrumbs.less";
-@import "pagination.less";
-@import "pager.less";
-@import "labels.less";
-@import "badges.less";
-@import "jumbotron.less";
-@import "alerts.less";
-@import "progress-bars.less";
-@import "media.less";
-@import "list-group.less";
-@import "responsive-embed.less";
-@import "close.less";
+@import "_animation.less";
+@import "_dropdown.less";
+@import "_button-group.less";
+@import "_input-group.less";
+@import "_nav.less";
+@import "_navbar.less";
+@import "_breadcrumb.less";
+@import "_pagination.less";
+@import "_pager.less";
+@import "_labels.less";
+@import "_badge.less";
+@import "_jumbotron.less";
+@import "_alert.less";
+@import "_progress.less";
+@import "_media.less";
+@import "_list-group.less";
+@import "_responsive-embed.less";
+@import "_close.less";
 
 // Components w/ JavaScript
-@import "modals.less";
-@import "tooltip.less";
-@import "popovers.less";
-@import "carousel.less";
+@import "_modal.less";
+@import "_tooltip.less";
+@import "_popover.less";
+@import "_carousel.less";
 
 // Utility classes
-@import "utilities.less";
-@import "responsive-utilities.less";
+@import "_utilities.less";
+@import "_utilities-responsive.less";