Update ASL to 20140131.
Add a new formula for PSPP

PSPP is the GNU reimplementation of SPSS, a package for doing
statistical analysis. This formula adds support for the GUI and
command-line pspp tools.

Closes #539.
augustus 3.0.1: New formula

AUGUSTUS is a program that predicts genes in eukaryotic genomic
sequences.
ogdraw 1.1.1: New formula

OGDRAW - Quickly draw high-quality graphical maps of organellar
genomes (And other circular DNA molecules, if you like).
hmmer 3.1b1: Promote devel to stable

repeatmasker requires hmmer 3.1 for nhmmer.
hmmer 3.1b1 was released 2013-May.
trf 4.07b: New formula

Tandem Repeats Finder is a program to locate and display tandem
repeats in DNA sequences.
repeatmasker 4.0.3: New formula

RepeatMasker is a program that screens DNA sequences for interspersed
repeats and low complexity DNA sequences.
snap 2013-11-29: New formula

SNAP - Semi-HMM-based Nucleic Acid Parser
cgap 20130314: New formula

Chloroplast Genome Analysis Platform
New Formula: graph-tool 2.2.29, HEAD