Apothecary: FreeImage 3.16.0

Update apothecary build scripts and header / static libs for FreeImage 3.16 (the latest tagged version).

Static libs for architectures included:
- [x] OSX 32 w/ libstdc++ and OSX 64 w/ libc++ (FAT)
- [ ] iOS (? is doing this)
- [ ] Android - armeabi (@arturoc ?) 
- [ ] Android - armeabi-v7a (@arturoc ?)
- [ ] Android - x86 (@arturoc ?)
- [ ] VS (@bakercp is doing this)
- [ ] win_cb (@bakercp is doing this)

The following platforms use pkg-config system libs
- [x] Linux (32 bit)
- [x] Linux (64 bit)
- [x] Linux Armv6l
- [x] Linux Armv7l

Notes: 

- Before committing the `FreeImage.h` I had to convert the line endings to LF.  Apparently it is shipped with CRLF.
- Most linux distros seem to currently ship with v 3.15.*  Theoretically this shouldn't be a problem, as linux uses pkg-config headers.
I just copied it directly from their source folder -- I didn't realize it was an oF mod.  I'm compiling it on win right now (as I type this), so I'll test it and update if the errors come up.