fix building libobjcryst and remove cctbx from bundle
add src/libobjcryst to gitignore
fix boost
BNL license text approved by Dorene.

To be merged to each diffpy package repositories.
Execute pyobjcryst tests.
Use tagged libobjcryst release.

Do not rebuild the bundle.
Bump up libobjcryst version to 1.9.8b.
Reset local branch When git tag is on the branch.

This allows to easily pull from the origin later.
Fix downloading over HTTPS protocol.

Also do not unzip tarball after fetching.
Remove redundant easy_install option "-U".

When installing from files the -U option is unnecessary.
Install PyCifRW from the latest tarball.
libobjcryst is now built from a release tag.

No need for special cleanup rules.
Add src-addons directory for extra src files.

These files are copied over to the src/ tree once all sources are
downloaded.
Simply ignore whole generated src tree.
Set RPATH when linking rather than with patchelf.
Set RPATH with linker instead of running patchelf.
Away with patchelf!  noweb is also not needed.
relpath is not needed anymore.

It was use in the patchelf step, but patchelf is already gone.
Freeze version for diffpy.Structure.
freeze version for diffpy.utils.