Remove spaces from directory names.

GNU make doesn't really like spaces in the pathnames.  It can be made
to work but it makes difficult to read makefiles even harder to read.
Update .gitattributes to treat more files at text.
Add .gitignore to ignore build output.
Adding my notes.

These include notes on how the build process works, disk layout, and
known limitations in the current build implementation.
Update README.mkd to include link to build notes.
Enable PoP sources to be built.

This commit includes new files to enable building of the PoP sources:
* Build/ subdirectory has 32-bit x86 tool binaries for OS X, Windows,
  and Linux.  This includes my snap Merlin 8 compatible assembler and
  crackle disk imaging utilities.
* Other/ subdirectory which includes game data files that were missing
  from the repository, disk layout specification, and source code
  patches which can update the source code to match the released 3.5"
  version of the game.
* Makefile to orchestrate the actual build process.