Ahaggar: indent before the condition in a COND_EXPR node

Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
Ahaggar: use base_cp_tree_walker() to walk trees

Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
Ahaggar: Add the GOTO_EXPR node walker

Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
Ahaggar: improve the LABEL_DECL and GOTO_EXPR walkers

* If this is a LABEL_DECL then print the location file:line

* Add the GOTO_EXPR walker

Signed-off-by: Djalal Harouni <tixxdz@opendz.org>