System language setting.
* Rename the binary from aegisub to Aegisub so it shows up properly in the title
bar. (I have no idea why it uses this when using CFBundleLocalizations)
Originally committed to SVN as r2653.
* Prefix PLIST_ to swappable variables in Plist.info
* Add scripts/osx-bundle.sed.in which swaps the variables in Info.plist
* Split AC_OUTPUT into AC_CONFIG_FILES for Makefiles/config scripts
(osx-bundle.sed.in) and add AC_OUTPUT below.
* svn:ignore property on . and scripts/
* Fix bug in Info.plist (---> to --> for ending XML comment)
Originally committed to SVN as r2581.
* Move aegisub/macosx/*.icns to packages/osx_bundle/Contents/Resources
* Move aegisub/macosx/Info.plist to packages/osx_bundle/Contents/
* Remove aegisub/macosx as it's no longer required.
Originally committed to SVN as r2545.