Changed name of bit vector in tests
Rearranged order of parameters in binary search tests
Added utils.c, wavelet_tree.c and bit_vector.c to build script
Revert "Added utils.c, wavelet_tree.c and bit_vector.c to build script"

This reverts commit 589863467bbc6eb3bb4f09371932604239fc6e47.
Added utils.c, wavelet_tree.c and bit_vector.c to build script
Fixed tests to use new refactored format
Fixed tests