Close file descriptors and fix OpenAL issue

unloadSound() did not previously close file descriptors which would eventually lead to a crash when too many file descriptors where open (about 1000 for Raspberry Pi).

OpenAL sources must be deleted before buffers otherwise it will result in **Illegal Operation**.
ofPixels: fix iterators syntax in vs2012
Merge branch 'master' of github.com:openframeworks/openFrameworks
Merge pull request #3172 from wronex/patch-1

Close file descriptors and fix OpenAL issue
Merge branch 'master' of git://github.com/openframeworks/openFrameworks into apothecary-openssl
Merge pull request #9 from danoli3/apothecary-openssl

Apothecary: OpenSSL 1.0.1i Formula iOS and Libs (armv7, armv7s, arm64, i386, x86_64)
Apothecary: OpenSSL Formula iOS Update (armv7, armv7s, arm64, i386, x86_64)

### Changes

- In this version updated to be clang compiled
- gnu11 c standard
- Fixed issues with i386 simulator in linking stages
- Fixed simulator targets (had incorrect min version, was causing
issues in compiling for clang as well as symbolic linking errors later).
- Fixed configure script for i386
- Building with optimised -Os flag
- fPIC on (requirement)
- Logs now outputted to log file (cleans up the console a bit) (will
implement in others)

### Validation:
- Verified it works :D! (or the custom build script for OpenSSL which
I cloned from this)
https://travis-ci.org/x2on/OpenSSL-for-iPhone/builds/36021963
- Tested compiled libraries against OpenSSL Xcode project (tested i386,
x86_64, armv7, arm64)