Add HDF-Java to dependencies

Force compilation in Java 1.6 for compatibility
Added basic support for HDF files
Updated Ant build file to include HDF libraries with the distribution package
Added a MapReduce operation to bath convert HDF files into text files for further processing
Retrieve all files in a MODIS directory
Added HDF libraries for Linux 32 bit

Handled some special cases when extracting data from HDF
Allowed HDFInputFormat to accept a text file with paths to a list of HDF files
Added a new target 'infect' that creates a redistributable package that includes SpatialHadoop installed on an existing Hadoop distribution
Follow the convention of Hadoop to place the native libraries

Added the operations PlotPyramid and HDFToText to the Main program
Allowed Sampler to run multiple rounds to read a random sample

Put MaximumSampleSize into effect
Fixed a bug when indexing points as an R-tree
Handle compression in Sampler
Added OpenStreetMap-related classes from OSMX project

Added Pig and PiggyBanks to the dependencies
Fixed Sampler to work locally with compressed content

Fixed a bug with OSMEdge when caculating MBR
Fixed a bug with Sampler to work with the correct interface of ShapeLineRecordReader
Added new index types: STR and STR+ which are similar to R-tree and R+-tree but perform a partitioning only (global index only)