Made new kernel selection methods for linear time MMD available under modular interfaces.
Includes some other minor changes
Merge pull request #878 from karlnapf/master

kernel selection for linear time mmd for modular interfaces
Ignore gcda file extension
Fixed totally wrong tapkee integration feature access callback
Added gcda for clear target
Removed unnecessary and memory-wise wrong distance initialization in laplacian eigenmaps
add eclipse project file
Fix serialization of Sparse features

- remove inplace (de-)constructors for SGSparse
- add malloc support for SGSparseVector<T>
- enable unit test for sparse feature serialization
Commented out unused projecting functions to avoid unhandled memory
Fixed lost nullspace shift in LLTSA
renamed test
unit tests for kernel selection
Merge branch 'mmd_kernel_selection'
Merge pull request #879 from karlnapf/master

unit tests for kernel selection
More safety for parameter dictionary routine. Related to #880
Enabled GCOV when profile is enabled
Added a unittest for MDS
Added multiclass liblinear test
Guarded mds test
Fixed wrong spectrum mismatch rbf construction in static interfaces