buildenv/win32-static: install-cygwin-deps.cmd fixes
buildenv/win32-static: update Qt 5 to 5.2-beta1.
buildenv/osx: update Qt 5 to 5.2-beta1.
buildenv/osx: disable QMacPasteboardMime in QtMacExtras.
win32-static setup.cmd: Wrap JScript in WSF

* For robustness as wscript seemingly can only execute .js JScript files
as long as the file type is associated “correctly”.
buildenv/win32-static: bump ZeroC Ice to 3.5.1.
Always overwrite generated VS project files

- Subsequent builds failed as a generated VS project file already existed.
Now, they are simply overwritten. We do not expect non-generated files to
be in place.
Merge remote-tracking branch 'upstream/master'
buildenv/osx-universal: add universal OS X build environment.

This environment can build a Mumble client that runs on
Mac OS X 10.4 and greater on both PowerPC and Intel CPUs.

It's a copy of the 'osx' environment with a few changes to be
able to build all packages for both i386 and ppc.
buildenv/osx-universal: add portaudio.
buildenv/osx-universal: point to new mumble-developers-qt HEAD.

Use an explicit commit ref to ensure that future updates to
mumble-developers-qt will require a change in the Qt 4 build
script as well.
buildenv/osx-universal: add -search_paths_first to Qt 4's OpenSSL linker flags.

The -search_paths_first flag forces ld to search each lib directory
for *both* a .dylib and an .a, instead of first searching each directory
for a .dylib, and failing that, searching them for an .a-version instead.

Without this change, our static OpenSSL libs are not considered, and Qt
(and deps) will link against the dynamic system-shipped OpenSSL libraries
instead.
buildenv/centos-ermine: rename build-qt.bash to build-qt4.bash.
buildenv/centos-ermine: point to the new mumble-developers-qt HEAD, like osx-universal.

And again, we specify an explicit commit-ref to require build-qt4.bash
to be updated when we bump mumble-developers-qt.
buildenv/centos-ermine: update to zlib 1.2.8.
buildenv/centos-ermine: bump mysql to 5.6.15 and fix hash check.

We used to check the openssl tarball's SHA1 sum. Copy/paste gone bad.
buildenv/centos-ermine: remove WITH_SHARED_OPENSSL patch from mysql build.

In version 5.6.16, ssl.cmake already makes sure to link against shared
OpenSSL libs unless WITH_SSL_PATH is specified.

Since this is now the default behavior, drop the patch. (Which didn't
apply cleanly anyway.)
buildenv/osx-universal: bump build-qt4.bash to version with Carbon build fixes.

Some of the changes in Qt 4.8.6 seem to be Qt 5 backports that do not take
Carbon into account. Sync to a mumble-developers-qt commit that fixes them.
.gitattributes: add gitattributes file to disable autocrlf repo-wide.
buildenv/win32-static: use latest repo-wide commit for the buildenv name.

Previously, we'd use the latest commit in buildenv/win32-static for the name.
However, since the build environment uses tools and configurations from the
whole repository, that method of versioning didn't hold up well.