XCodeProject: Move PsychScriptingGlue.cc -> .c so Code search works again.
Add binary build of libportAudio.a 64-Bit for Linux to Cohorts/PortAudio folder.

… so we don’t need to go through recompiles on any new build system …
Fix Screen('Computer') for MS-Windows.

- Fix complete failure due to wrong field count for majorstruct.
- Remove empty MACAddress field - causes PsychtoolboxRegistration to
botch its job.
- Add “NT-“ prefix to ’system’ field, so we could use it directly for
OS version detection in PsychtoolboxRegistration instead of relying on
Matlab specific api, which may even report inaccurate info on Matlab
versions which predate a given os release.

- Also fix PsychSupportStatus() reporting: Should tell “supported” on
Windows-7 and “partially supported” on later Windows versions for the
moment, not the other way round.
Fix crash in Screen('OpenMovie') if optional 'movieOptions' is omitted.

This was dereferencing an uninitialised pointer, but worked by pure
chance in all tests with both Octave and Matlab on both Linux and OSX,
except for 64-Bit Matlab on Linux.
-> Init pointer to empty string to prevent the common case of no option
provided.
-> Do some white-space cleanup in PlayMoviesDemo.m.
Rebuild libptbdrawtext_ftgl64.so.1 on Debian-6 to fix load failures, e.g., on Ubuntu 12.04

Turns out, building it on a recent Linux distro (Ubuntu 13.10) caused
it to develop some unhealthy dependencies on recent stdlibc++ versions
which aren’t supported on either Debian-6 or Ubuntu 12.04 LTS.
Load failure with: “GLIBCXX_3.4.15 not found in libstdc++.so.6”

This poses a problem for our continued support of Ubuntu 12.04 LTS. May
need to keep an old Debian-6 VM around just to be able to build the
plugins.
IOPort and Screen for Linux and OSX rebuilt.

-> To integrate ‘ReceiveLatency’ change into IOPort.
-> To integrate latest Screen(‘OpenMovie’) fixes into Screen.
All mex files for 32/64 Bit Matlab on Windows rebuilt.