MD5 check

To check download integrity it is useful to to a md5sum check where this number is provided:
md5sum -c #md5_file#
The md5_file defines one check on each line:
#md5_checksum# #filename#

Compile boost from source

1. Start the Visual Studio prompt.
2. Navigate to you boost folder.
3. Run bootstrap.bat to build b2
4. To build 32-bit libs for VS2010 run:
   b2 --toolset=msvc-10.0 --build-type=complete stage