Fix missing image in Introduction to Dylan/Objects

Fix dylan-lang/website#68
Merge pull request #686 from fracek/fix-image-objects

Fix missing image in Introduction to Dylan/Objects
Merge pull request #690 from wvdschel/master

Updated debian package generation scripts
Cleanup whitespace.
Merge pull request #693 from waywardmonkeys/project-manager-whitespace

Cleanup whitespace.
Clean up some inline methods.
Add .phony targets to Makefiles.
Fix variable name in dfmc tracing.

Also a couple of fixups to formatting.
Don't emit invalid character literals.

Current clang (3.4) fails on '\xFFFF' as a character literal.

Fixes #695.
Merge pull request #694 from waywardmonkeys/makefile-phony-targets

Add .phony targets to Makefiles.

Seems okay. Removing the "default:" target is fine since there is no reasonable default.
Merge pull request #696 from waywardmonkeys/invalid-character-literals

Don't emit invalid character literals.

Lets hope gcc likes this as much as clang.
Fix typo.
Make things use format-err / format-out.
[common-dylan] Use realpath on OS X with _NSGetExecutablePath.

This makes OS X use realpath on the result from _NSGetExecutablePath
so that the resulting application name is the real name, rather than
potentially a symlink. This allows the compiler to be installed as
a symlink to the actual installation rather than needing wrapper
scripts.
Merge pull request #698 from waywardmonkeys/realpath-os-x

[common-dylan] Use realpath on OS X with _NSGetExecutablePath.

Good riddance.
Merge pull request #697 from waywardmonkeys/format-err

Make things use format-err / format-out.
Fix string emitted when there are hex escapes preceding a valid hex character.

This fixes a compilation and correctness issue.
Merge pull request #699 from waywardmonkeys/further-hex-escape-fixes

Fix string emitted when there are hex escapes preceding a valid hex char...
Makefile: do not check submodules if no .git dir
Merge pull request #700 from alexeymuranov/improve-makefile

Improve Makefile: do not check submodules if not in a .git repository