[evince] comics: add support for bsdtar command

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 7cc1c17cba611a7f6195cbd70041123cbe9bc610
Author: Balló György <ballogyor gmail com>
Date:   Sat Jan 10 18:02:38 2015 +0100

    comics: add support for bsdtar command
    
    bsdtar is able to extract all supported comics archive format.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742721

 backend/comics/comics-document.c |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)
---
diff --git a/backend/comics/comics-document.c b/backend/comics/comics-document.c
index b9d60cd..4997ee8 100644
--- a/backend/comics/comics-document.c
+++ b/backend/comics/comics-document.c
@@ -361,6 +361,12 @@ comics_check_decompress_command    (gchar          *mime_type,
                        comics_document->command_usage = GNAUNRAR;
                        return TRUE;
                }
+               comics_document->selected_command =
+                               g_find_program_in_path ("bsdtar");
+               if (comics_document->selected_command) {
+                       comics_document->command_usage = TAR;
+                       return TRUE;
+               }
 
        } else if (!strcmp (mime_type, "application/x-cbz") ||
                   !strcmp (mime_type, "application/zip")) {
@@ -387,6 +393,12 @@ comics_check_decompress_command    (gchar          *mime_type,
                        comics_document->command_usage = P7ZIP;
                        return TRUE;
                }
+               comics_document->selected_command =
+                               g_find_program_in_path ("bsdtar");
+               if (comics_document->selected_command) {
+                       comics_document->command_usage = TAR;
+                       return TRUE;
+               }
 
        } else if (!strcmp (mime_type, "application/x-cb7") ||
                   !strcmp (mime_type, "application/x-7z-compressed")) {
@@ -410,6 +422,12 @@ comics_check_decompress_command    (gchar          *mime_type,
                        comics_document->command_usage = P7ZIP;
                        return TRUE;
                }
+               comics_document->selected_command =
+                               g_find_program_in_path ("bsdtar");
+               if (comics_document->selected_command) {
+                       comics_document->command_usage = TAR;
+                       return TRUE;
+               }
        } else if (!strcmp (mime_type, "application/x-cbt") ||
                   !strcmp (mime_type, "application/x-tar")) {
                /* tar utility (Tape ARchive) */
@@ -419,6 +437,12 @@ comics_check_decompress_command    (gchar          *mime_type,
                        comics_document->command_usage = TAR;
                        return TRUE;
                }
+               comics_document->selected_command =
+                               g_find_program_in_path ("bsdtar");
+               if (comics_document->selected_command) {
+                       comics_document->command_usage = TAR;
+                       return TRUE;
+               }
        } else {
                g_set_error (error,
                             EV_DOCUMENT_ERROR,