Some features for class Residual.

Clean-ups in xml.

Updated MFD.

Adapted ADFVdiscr for Residual class.

Matrix<Var>::DotProduct will promote type depending on the argument.

Changed how matrix annotation is handled to decrease memory required to
store data of type DATA_VARIABLE.

Added multivar_expression_reference that can reference individual matrix
row.

Added Residual class.

Fixed that Sparse::Matrix::Load and Sparse::Vector::Load may required
MPI initialization.

Fix for possibility of race condition in point-to-point MPI
communications.

Fixes for warnings produced by clang.

Including issue #15

Call MPI_Init if needed, fix RowEntryType creation

XML format now can use Include attribute in any XML tag to address
external files.

Added mechanism to name meshes and retrive meshes by name.

Added feature to store data of RemoteHandle type that allows to address
elements on another mesh. Loading this data type from files is still
awkward.

Fixes for GCC.

Moved functionality to operate with dense matrices as INMOST service.

Added possibility to exchange data of type DATA_VARIABLE in parallel.

Added possibility to include external content in xml format.

Moved overloaded operators for variables from namespace INMOST into
global scope to prevent possible ambiguities in compilers.

Added perturbation algorithm for BCGS solver.

correct link for wiki

add cdash link

BCGStab(L) solver: perturbation of r_tilde to avoid breakdown.
Possibility to annotate matrix.

Fixed element removal algorithm during modification.
Added features to RowMerger algorithm.
Changed reported number of iterations for BiCGStab(L)

Conflicts:
	solver.cpp

We should trim spaces from the end of database line,
otherwise file names may be illegal.

Fix a problem in internal file format reading with MPI introduced in
previous commit.

Improved automatic finalization of xml tags in debugging files when
execution is halted.
Fixed that internal file format may be read incorrectly.

Replace str.back() with *str.rbegin()

Comment out faulty unused code.
Ensure dynarray<T,64>::iterator is parsed as a type.

Conflicts:
	solver_bcgsl.hpp