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- Extends the algorithms compatible with bytecode to compute the  steady-state (ticket #11). The new values for solve_algo are:
   * 0: fsolve
   * 1: solve1
   * 2, 4: solve1 + block decomposition
   * 3: csolve
   * 5: LU decomposition with UMFPack (method handling sparse matrix in Matlab)
   * 6: GMRES
   * 7: BiCGStab
   * 8: bytecode own solver (use Gaussian elimination + sparse matrix)

- Bytecode can now evaluate a specific block instead of the overall blocks (new bytecode's option 'Block = block_number')

in unused model local variables

external_function: modified to pass functions as string names as opposed to function handles to reduce number of calls to mexCallMatlab when use_dll option is invoked

unused model local variables (closes #101)

Windows/64-bit platform

options (closes #98)

- Changing the the stack_solve_algo option :
Previous version             New version
1 : Sparse LU                0 : Sparse LU
2 : GMRES                    1 : Relaxation
3 : BiCGStab                 2 : GMRES
4 : Sparse LU & Optimal Path 3 : BiCGStab
5 : bytecode own solver      4 : Sparse LU & Optimal Path
                             5 : bytecode own solver

- Substitutes lead for exogenous and endogenous variables in the deterministic case: direct substitution of the variables even in non-linear expressions

Bug correction in the deterministic simulation: to solve a purely backward or forward looking block requires contemporaneous derivatives only.

- preprocessor provides informations about the dynamic structure of each block
- extends the algorithms available with bytecode: stack_solve_algo = 1, 2, 3 and 4 is compatible the bytecode. Speed and memory requirement are improved with stack_solve_algo = 1 or 4 for large scale models.
- bytecode can be used to evaluate a model

redundant with data members, added const keywords, use passing-by-reference)

- remove useless output type oMatlabDynamicModelSparseLocalTemporaryTerms
(indistinguishable from oMatlabDynamicModelSparseLocal)
- fix bug in output type of sparse static model

Preprocessor: fix crash when mean or stderr of an estimated parameter is specified as an expression instead of a plain value (bug introduced in 28d30d9a626a8d7be0866038924bfc52a935ee27)

This reverts commit 524e9a9c67dafa4d4933823b8c6893ad39691b09.

lagged endo/exo so that they contain the type-specific symbol ID (instead of
the preprocessor internal symbol ID)

Preprocessor: fix line numbering problems due to native MATLAB statements (bug introduced in a0cd4b33aea0965d9baa9b4c66d0c875fa0aa7d0 and 6582341799d35e80c59f6f3559dbd18e70443747)

Preprocessor: in the lexer, "end;" now corresponds to 2 tokens (instead of one), for consistency with the other tokens

Preprocessor: when removing lags greater than 2 on endogenous or lags on exogenous, don't substitute model local variables that do not need to

Preprocessor: in the parameter derivatives file, add the global "oo_" when the STEADY_STATE operator is used