TST : this is not exactly equal on some platforms.

This should address gh-395
TST: be a bit more explicit in the 'naked' call to csd_predict.
BF: fixed problem with NANs in odfdeconv
changed sum with any
DOC: added comment for the case of NaNs
DOC: forot the .fit method in the comment
Merge pull request #407 from Garyfallidis/fix_for_Jan_Schreiber

BF: fixed problem with NANs in odfdeconv
minor corrections
Merge pull request #396 from arokem/fix-precision-csd-predict

TST : this is not exactly equal on some platforms.
Merge pull request #409 from mdesco/fsl_pipe_no_print

minor corrections to pipe function
Fix memory leaks
Fixed typos
Removed C++ dependency for Cython.
BF: use simple multiplication instead of using exponentiation and pow to prevent the generated cpp code from calling pow (visual c gets confused because it doesnt know what version of pow to use)

Conflicts:
	dipy/tracking/streamlinespeed.pyx
Support list of streamlines having different shape
NF: added faster implementation of sph_harm in shm.py
TEST: vectorized the for loops
Merge pull request #411 from MarcCote/cython_memory_leaks

Fix memory leak in cython functions length and set_number_of_points
Use scipy sph_harm if scipy version is greater or equal to 0.15.0
Pep 8