update small case problem

testcases/smallest_problem/fort_00.90

 &BASIC
-  nrun   = 10
+  nrun   = 1
   dt     = 0.01
-  tmax   = 1
+  tmax   = 5
   maxruntime = 356400
 /
 &GRID
@@ -74,8 +74,8 @@
 &INITIAL_CON
   INIT_OPT    = 'phi'
   ACT_ON_MODES       = 'donothing'
-  init_background  = 0
-  init_noiselvl = 0.005
+  init_background  = 1.0
+  init_noiselvl = 0.0
   iseed         = 42
 /
 &TIME_INTEGRATION_PAR

testcases/smallest_problem/gyacomo_1

+../../bin/gyacomo_1
\ No newline at end of file

testcases/smallest_problem/gyacomo_1_debug

+../../bin/gyacomo_1_debug
\ No newline at end of file

testcases/smallest_problem/gyacomo_alpha

-../../bin/gyacomo_alpha
\ No newline at end of file

testcases/smallest_problem/gyacomo_debug

-../../bin/gyacomo_debug
\ No newline at end of file