Merge pull request #2 from amd86/master

Added elf 64 bit spec
Added initial interface ExeObjFileParser and supporting classes
Updated ExeObj to return the entry point index instead of the entire segment.
Updated ExeObj
Added FileReader class and project files.
Added PDF versions of a and b specifications.
Updated FileReader.java with comments
Renamed ExeObjFileParser.java to IBytecastFsys.java
Added structure for ELF Section Header Entries.
Fixed missing argument in IBytecastFsys.
Added ELFSectionHeaderEntryStruct.
Updated ELFSectionHeaderEntryStruct with enumerations
Updated Elf main header and added util class