Added minibatch support to MarginRankingCriterion and PairwiseDistance.
Document qt terminal for gnuplot
Add support for PDF in figprint if gnuplot supports

Gnuplot support for pdf is enabled in homebrew with
`brew install gnu plot --pdf``
Document pdf for figprint
Document svgfigure

It was undocumented, yet can be useful.
Send error if gnuplot does not have pdf support
Add function pdffigure()
Document pdf possibilities
Document in main description, too
Fix typo in description of eps terminal
fixed a bug in CUDA norm
added strict c89 flags
fixed cuda flags issue
C89
avoid paths being compiled with C89 flags: some compilers fail.
Merge pull request #163 from vladmnih/batch

Added minibatch support to MarginRankingCriterion and PairwiseDistance.
Merge pull request #175 from 2ndforks/master

fixed a bug in CUDA norm
Add more tests for torch.sort()
Benchmark sort worst case on sorted case
Indent quicksort for improved readability