Close structure - add regtest

regtest/basic/rt-close-structure/Makefile

+include ../../scripts/test.make

regtest/basic/rt-close-structure/config

+type=driver
+arg="--plumed plumed.dat --trajectory-stride 50 --timestep 0.005 --ixyz diala_traj_nm.xyz --dump-forces forces --dump-forces-fmt=%10.6f"
+extra_files="../../trajectories/diala_traj_nm.xyz  ../../trajectories/path_msd/allv.pdb "

regtest/basic/rt-close-structure/plumed.dat

+p2: PROPERTYMAP REFERENCE=allv.pdb PROPERTY=X,Y LAMBDA=69087 EPSILON=0.001 LOG-CLOSE=1 DEBUG-CLOSE=1
+p3: PROPERTYMAP REFERENCE=allv.pdb PROPERTY=X,Y LAMBDA=69087 NEIGH_SIZE=8 NEIGH_STRIDE=5 EPSILON=0.001 LOG-CLOSE=1 DEBUG-CLOSE=1
+PRINT ARG=p2.X,p2.Y,p2.zzz,p3.X,p3.Y,p3.zzz STRIDE=1 FILE=colvar FMT=%8.2f
+DUMPDERIVATIVES ARG=p2.X,p2.Y,p2.zzz,p3.X,p3.Y,p3.zzz STRIDE=1 FILE=deriv FMT=%8.2f
+