Adding minimal perfect hash function generation.

An implementation of minimal perfect hash function generation as described in
Czech et. al. 1992.  http://bit.ly/137iukS
Bump Compose
[Sundials] Change metadata to point to JuliaLang/Sundials.jl
Merge branch 'devel' of git://github.com/JuliaLang/METADATA.jl into devel
Merge pull request #354 from tshort/devel

[Sundials] Change metadata to point to JuliaLang/Sundials.jl
bump PyCall for stevenj/PyCall.jl#40
bump Cubature
bump PyPlot
Zlib: bump version
Patch HDF5 (support for extendable dimensions; small fixes)
Merge pull request #355 from fhs/Zlib

Zlib: bump version
Bump Compose and Gadfly
bump CRC32, ZipFile, NPZ
Merge pull request #356 from fhs/zip

bump CRC32, ZipFile, NPZ
Merge pull request #338 from mweiden/MinimalPerfectHashes.jl

Adding minimal perfect hash function generation.
Add a new version (0.2.0) of the WAV package that works with julia 0.2.0

This now uses keywords instead of the Options package. It also replaces
deprecated features from julia 0.1.0 with the recommended equivalents in
julia 0.2.0.
Merge pull request #358 from dancasimiro/WAV

Add a new version (0.2.0) of the WAV package that works with julia 0.2.0
bump HttpCommon version: it needs a requires file.
bump HttpParser version: it needed a requires file
bump HttpServer version: add a requires file, bump sha1