generic loaders - fix load if process esits before stdout produced

i found that generic loaders broke on my machine. stdout was never
reaching the app. child process exited and never sent stdout before
parent got anything - it all was lost in buffers somewhere. this fixes
it. fflush stdout. nasty little bugger.

@fix

legacy/evas_generic_loaders/src/bin/gst/main.c

@@ -287,6 +287,6 @@ main(int argc, char **argv)
      printf("done\n");
 
    _gst_shutdown();
-
+   fflush(stdout);
    return 0;
 }

legacy/evas_generic_loaders/src/bin/gst/main_0_10.c

@@ -273,6 +273,6 @@ main(int argc, char **argv)
      printf("done\n");
 
    _gst_shutdown();
-
+   fflush(stdout);
    return 0;
 }

legacy/evas_generic_loaders/src/bin/pdf/main.cpp

@@ -350,6 +350,6 @@ main(int argc, char **argv)
         eina_tmpstr_del(tmpdir);
         eina_tmpstr_del(generated);
      }
-
+   fflush(stdout);
    return 0;
 }

legacy/evas_generic_loaders/src/bin/ps/main.c

@@ -284,6 +284,6 @@ main(int argc, char **argv)
      printf("done\n");
 
    _spectre_shutdown();
-
+   fflush(stdout);
    return 0;
 }

legacy/evas_generic_loaders/src/bin/raw/main.c

@@ -235,6 +235,7 @@ int main(int argc, char **argv)
           }
      }
    _raw_shutdown();
+   fflush(stdout);
    return 0;
 
 }

legacy/evas_generic_loaders/src/bin/svg/main.c

@@ -223,6 +223,7 @@ int main(int argc, char **argv)
           }
      }
    _svg_shutdown();
+   fflush(stdout);
    return 0;
 
 }

legacy/evas_generic_loaders/src/bin/xcf/main.c

@@ -1726,5 +1726,6 @@ main(int argc, char **argv)
    else
       printf("done\n");
    xcf_cleanup();
+   fflush(stdout);
    return 0;
 }