Multithreading support

Also made progress output a little bit nicer

default = 1 thread at once, for safety reasons
I've encountered critical issues with ImageMagick compiled with OpenMP support. Hope that package maintainers are clever.
ShittyMagickWandGenesis(), ShittyMagickWandTerminus() :-)

1 files changed, 6 insertions, 0 deletions

diff --git a/src/items.h b/src/items.h
index 0b053b9..daaefb0 100644
--- a/src/items.h
+++ b/src/items.h
@@ -70,6 +70,12 @@ typedef struct {
   char *border_style;
   TIndexItemType type;
   gboolean hidden;
+
+  /*  generated item info  */
+  char *gen_img_src;
+  char *gen_thumb;
+  gboolean gen_portrait;
+  gboolean gen_done;
 } TIndexItem;