Merge pull request #96 from mwojcikowski/patch-1

Define bit 44 in MACCS.txt
Identify frequencies with header

In the VASP format, frequency parsing was done until tokenization
returned less than two elements.  However, the list of displacements may
be closed with a section such as the following:

	Finite differences POTIM=  2.000000000000000E-002
	LATTYP: Found a simple tetragonal cell.
	ALAT       =    12.7378929000
	C/A-ratio  =     2.5701183985

	Lattice vectors:

that would not break from the frequency-parsing loop and keep parsing
nonexisting data, eventually leading to a crash.

Instead of breaking the loop on 'less than two tokens', we check whether
the header contains one of 'f/i=' or 'f', if it does not, we break
the loop.