Merge pull request #1 from twpayne/linux

Initial Linux build
fixed copyright message
Build object files in bin directory and add clean target
Ensure that linking of createlayer includes BaseTypeConversion
Merge pull request #2 from twpayne/linux

Fix linking of createlayer on Linux
Use -Wl,--whole-archive instead of dummy function hack to work around static initialization problem on Linux
calcextent can have an input directory,
using internal atoi64 in tokenizer
Merge pull request #3 from twpayne/linux

Use -Wl,--whole-archive instead of dummy function
Merge branch 'master' of https://github.com/OpenWebGlobe/DataProcessing
moved some functionality to "ogprocess.cpp"
compiles again
CreateLogger now returns logger
Add addata target to Linux Makefile
Add missing header
Avoid using deprecated header
Merge pull request #4 from OpenWebGlobe/linux

Build adddata on Linux
std::vector<int64> added to base types
calcextent now lists extents for different lod
further implementation of adddata
added function "ImageToMemoryRGB"
calculating anchor points