Added stuff to read in trajectories in tandem with ReadDissimilarityMatrix

regtest/analysis/rt-read-dissims2/Makefile

regtest/analysis/rt-read-dissims2/config

...st/analysis/rt-read-dissims2/configs-stride.pdb.reference

regtest/analysis/rt-read-dissims2/mymatrix.dat

...t/analysis/rt-read-dissims2/mymatrix_stride.dat.reference

regtest/analysis/rt-read-dissims2/plumed.dat

src/analysis/AnalysisBase.cpp

src/analysis/AnalysisWithDataCollection.cpp

src/analysis/ReadAnalysisFrames.cpp

src/analysis/ReadAnalysisFrames.h

src/analysis/ReadDissimilarityMatrix.cpp

user-doc/Analysis.txt