Merge pull request #276 from tanmaykm/devel

bump sha1. fixes https://github.com/nolta/Winston.jl/issues/58
add DiscreteFactor
Merge pull request #278 from wlbksy/devel

add DiscreteFactor
Bump Options to 0.2.1 (delete!->splice!)
Bump ArgParse to 0.2.3 (delete!->splice!)
Bump GLPK to 0.2.3 (delete!->splice!)
Bump LibExpat sha1
Bump libCURL sha1
Added AWS.jl
Merge pull request #279 from amitmurthy/devel

Added AWS.jl
Updated dependencies on AWS.jl
update sha1

update sha1

Add new function to packages.

Work on this package should be done
Merge pull request #280 from wlbksy/patch-1

update sha1
bump JSON sha1
MathProg suite bump
Update GLPKMathProgInterface url (close #282)
Bump GLPKMathProgInterface
Bump AWS SHA1
Bump libCURL SHA1
Bump AWS sha1