[osx] Make enchant relocatable
[osx] Explicitly depend on freetype
[osx] Use gtk from github for now

There are some patches not being applied yet to gtk+ and this makes it
a bit easier to go forward. This should be switched back to a tarball
+ patches when gtk+ 3.14 is released.
[osx] Add build env command
[osx] Fix current script directory
[osx] Ensure source directory before linking
[osx] Remove debug statement
[osx] Remove additional printed newline
[osx] Add more details in build/README
[osx] Reorganize bundle making
[osx] Fix mixed whitespacing styles
[osx] Remove cached python files from bundle
[osx] Make sure to install libgit2-glib
[osx] Add ignores