* Fix old osx condition
Current code assumes that osx < 10.12 is equivalent to ppc osx. It's not
true as Leopard x86 is still < 10.12 but not ppc. As xcode compiles fat
binaries it includes osx x86 and compilation fails.
* Disable crtswitchres when no c++11 is available
Crtswitchres altually needs c++11. Since it's not that important to make
it compatible with lower c++, just disable if no c++11 is available
* Don't use firstObject on old Mac OS X.
It was introduced in 10.6, so on old ones just implement it ourselves
* Compile osx-ppc frontend
* osx-ppc: Build a fat binary
On 10.6 i386 xcode apparently refuses to build a pure ppc.
Settle for a fat binary.
* (Metal/WindowListener) Fix duplicate symbol errors by
moving implementation of WindowListener to cocoa_common.m
* (Apple) Cleanup some conditionals
* (Cocoa) Cut down on OSX ifdefs in Cocoa-specific code
* (QB) Add rule for Metal - define HAVE_COCOA_METAL for now
when building for Metal, and HAVE_COCOA for non-Metal build
* Make necessary changes to Makefile.common and qb/config.libs.sh:
- Disable OpenGL for now for Metal build
- Take Metal conditional out of OpenGL block in Makefile.common
* (Metal) Header fixes for compiling without Xcode/Griffin
* (Mac) Some buildfixes for non-Xcode building
* (cocoa_common.h) Restructure to no longer use -DOSX
* (Apple) More buildfixes
* (Apple) Cleanups
