Fix compiler warnings and one crash in llvm-test-suite.
[dpkg] Added URL and Vendor fields to generated debs.

This is used by the Packages index generate by apt-ftparchive and might be useful when we set up a repository.
[dpkg] Adapted Debian packaging script to use the actual compiler version.
Merge pull request #742 from wvdschel/master

Various Debian packaging improvements.
Merge pull request #750 from cgay/llvm-test-suite

Fix compiler warnings and one crash in llvm-test-suite.
Create simple-format module, move format-to-string.

This moves the format-to-string binding from common-extensions
to a simple-format module which will be replacing simple-io.
Project wizard knows about simple-format instead of simple-io.
[make-dylan-app] No longer need to exclude format-to-string.
Merge pull request #751 from waywardmonkeys/move-format-to-string

Move format-to-string
Reduce dispatch when writing data to a socket.
Merge pull request #754 from waywardmonkeys/network-dispatch-reductions

Reduce dispatch when writing data to a socket.
[library-reference] Mention additional string ops from DRM.
[dfmc-conditions] with-simple-abort-retry-restart allows non-constant expressions.
Nicer error message for dswank when no project set

When using DIME and you try to compile the file without setting the
project, you got a method missing error on #f, #f being the missing
project receiving a message.

Added a nil check on *project* in dswank to throw an error with a more
obvious message, which surfaces back on the Emacs side as:

Evaluation aborted on Error: A project has not been set
Merge pull request #756 from erikcharlebois/master

Nicer error message for dswank when no project set
Merge pull request #755 from waywardmonkeys/dfmc-conditions-expressions

[dfmc-conditions] with-simple-abort-retry-restart allows non-constant expressions
[doc] Update sphinx-extensions submodule.
[dfmc-optimization] Control dispatch behavior via environment variables.

Let partial dispatch and dispatch profiling be controlled by
OPEN_DYLAN_PARTIAL_DISPATCH and OPEN_DYLAN_PROFILE_ALL_CALLS
respectively.
Merge pull request #758 from waywardmonkeys/switch-to-env-vars

[dfmc-optimization] Control dispatch behavior via environment variables.
Update for format-to-string changes.