Fixed regtest failing for numerical errors on new clang compilers

regtest/basic/rt-maxent-1/colvar.reference

 #! FIELDS time j1 j2 j3 j4 j5 j6 j7
- 0.000000  10.5935   3.9915   1.1185   4.5355   0.4759   3.2683   2.4940
- 10.000000   0.4341   5.2427   8.2510   2.6140   2.1636   1.4050   3.0609
- 20.000000   8.7739   5.8798   0.5531   2.5260   0.8015   5.7921   3.2281
- 30.000000  11.0298   4.5288   0.8065   1.9460   2.2785   5.6556   3.8554
- 40.000000  11.4096   5.5963   1.2854   6.4978   0.8623   5.7078   3.9404
- 50.000000  10.8848   7.5652   7.4284   1.8964   2.4459   0.1991   0.4854
- 60.000000   9.9558   6.5077   3.3126   2.0712   1.0280   5.8000   3.9920
- 70.000000  10.8136   6.7461   1.5468   2.8648   0.8674   5.4530   3.7263
- 80.000000   9.1018   4.9667   2.8858   1.8865   1.2836   5.3631   3.9995
- 90.000000   3.4876   7.4668   8.8033   2.4603   1.1766   5.2204   3.9656
- 100.000000   3.5324   4.8932  11.4783   2.0514   2.2295   5.3712   3.8787
+ 0.000000   10.593    3.991    1.119    4.535    0.476    3.268    2.494
+ 10.000000    0.434    5.243    8.251    2.614    2.164    1.405    3.061
+ 20.000000    8.774    5.880    0.553    2.526    0.801    5.792    3.228
+ 30.000000   11.030    4.529    0.807    1.946    2.278    5.656    3.855
+ 40.000000   11.410    5.596    1.285    6.498    0.862    5.708    3.940
+ 50.000000   10.885    7.565    7.428    1.896    2.446    0.199    0.485
+ 60.000000    9.956    6.508    3.313    2.071    1.028    5.800    3.992
+ 70.000000   10.814    6.746    1.547    2.865    0.867    5.453    3.726
+ 80.000000    9.102    4.967    2.886    1.887    1.284    5.363    4.000
+ 90.000000    3.488    7.467    8.803    2.460    1.177    5.220    3.966
+ 100.000000    3.532    4.893   11.478    2.051    2.229    5.371    3.879

regtest/basic/rt-maxent-1/plumed.dat

@@ -51,5 +51,5 @@ TEMP=300
 PRINT ...
 ARG=j1,j2,j3,j4,j5,j6,j7 
 STRIDE=10 FILE=colvar
-FMT=%8.4f
+FMT=%8.3f
 ... PRINT

regtest/basic/rt-maxent-2/colvar.reference

@@ -11,14 +11,14 @@
  90.000000 3.487607 7.466811 8.803344 2.460335 1.176599 5.220447 3.965647
  100.000000 3.532403 4.893175 11.478312 2.051419 2.229474 5.371195 3.878713
 #! FIELDS time j1 j2 j3 j4 j5 j6 j7
- 0.000000  10.5935   3.9915   1.1185   4.5355   0.4759   3.2683   2.4940
- 10.000000   0.4341   5.2427   8.2510   2.6140   2.1636   1.4050   3.0609
- 20.000000   8.7739   5.8798   0.5531   2.5260   0.8015   5.7921   3.2281
- 30.000000  11.0298   4.5288   0.8065   1.9460   2.2785   5.6556   3.8554
- 40.000000  11.4096   5.5963   1.2854   6.4978   0.8623   5.7078   3.9404
- 50.000000  10.8848   7.5652   7.4284   1.8964   2.4459   0.1991   0.4854
- 60.000000   9.9558   6.5077   3.3126   2.0712   1.0280   5.8000   3.9920
- 70.000000  10.8136   6.7461   1.5468   2.8648   0.8674   5.4530   3.7263
- 80.000000   9.1018   4.9667   2.8858   1.8865   1.2836   5.3631   3.9995
- 90.000000   3.4876   7.4668   8.8033   2.4603   1.1766   5.2204   3.9656
- 100.000000   3.5324   4.8932  11.4783   2.0514   2.2295   5.3712   3.8787
+ 0.000000   10.593    3.991    1.119    4.535    0.476    3.268    2.494
+ 10.000000    0.434    5.243    8.251    2.614    2.164    1.405    3.061
+ 20.000000    8.774    5.880    0.553    2.526    0.801    5.792    3.228
+ 30.000000   11.030    4.529    0.807    1.946    2.278    5.656    3.855
+ 40.000000   11.410    5.596    1.285    6.498    0.862    5.708    3.940
+ 50.000000   10.885    7.565    7.428    1.896    2.446    0.199    0.485
+ 60.000000    9.956    6.508    3.313    2.071    1.028    5.800    3.992
+ 70.000000   10.814    6.746    1.547    2.865    0.867    5.453    3.726
+ 80.000000    9.102    4.967    2.886    1.887    1.284    5.363    4.000
+ 90.000000    3.488    7.467    8.803    2.460    1.177    5.220    3.966
+ 100.000000    3.532    4.893   11.478    2.051    2.229    5.371    3.879

regtest/basic/rt-maxent-2/plumed.dat

@@ -52,5 +52,5 @@ TEMP=300
 PRINT ...
 ARG=j1,j2,j3,j4,j5,j6,j7 
 STRIDE=10 FILE=colvar
-FMT=%8.4f
+FMT=%8.3f
 ... PRINT