README.rst: add my proposed directory structure
added post-process.sh and configuration.sh
change merge commit message
Use SAGE_SRC instead of statically set to devel
Useg SAGE_PKGS instead of statically putting spkgs in packages
more configuration variables
minor corrections
add initial gitignore, reorganize configure.sh
truely rewrite build system directory
truely rewrite mac app directory
move packages to SAGE_BUILD/pkgs
remove all old files in a single loop
start adding some patches
strip bad whitespace

very slow, would be way better if it could be done with filter-index
add experimental and optional spkgs as well
fix stripspace and use index-filter

still takes awhile (after all we cat each text file everytime it is
modified), but much better than before. also binaries are no
longer corrupted.
add toggle for striping whitespace since it takes a really long time
Massively speed up stripping bad whitespace

This is done using associative arrays in bash4, but
unfortunately since you cannot export arrays, this has
to be done by hacking on the git-filter-branch shell script.
fix typo
whitespace: occassionally misses files still, so just go over all files each time