Bump FunctionalCollections sha1
Merge pull request #256 from zachallaun/FunctionalCollections

Bump FunctionalCollections sha1
Bump Tk sha1 (convenience methods, move visibility into Window constructor)
Bump Cairo sha1 (coordinate convenience wrappers)
Bump MAT sha1
Bump StrPack sha1
Add Memoize.jl, an improved version of extras/memoize.jl
Add DataFrames v0.2.3
Added LibExpat
Merge pull request #257 from amitmurthy/LibExpat

Added LibExpat
Bump GLPK 0.1.1->0.1.2 0.2.1->0.2.2
Remaster merge