qemu: Updated test image URL as the old one is no longer available. Improved test block by checking every built binary's --version output for either the expected version string or "QEMU emulator" to verify that the binaries have been built correctly.

[akemin-dayo]

Here's what the new brew test qemu output is like:

karen002ppc-osx104:~ karen$ brew test qemu
Testing qemu
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-aarch64 --version

(process:28027): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-alpha --version

(process:28029): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-arm --version

(process:28031): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-cris --version

(process:28033): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-i386 --version

(process:28035): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-lm32 --version

(process:28037): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-m68k --version

(process:28039): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-microblaze --version

(process:28041): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-microblazeel --version

(process:28043): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-mips --version

(process:28045): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-mips64 --version

(process:28047): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-mips64el --version

(process:28049): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-mipsel --version

(process:28051): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-moxie --version

(process:28053): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-or32 --version

(process:28055): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-ppc --version

(process:28057): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-ppc64 --version

(process:28059): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-ppcemb --version

(process:28061): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-s390x --version

(process:28063): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-sh4 --version

(process:28065): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-sh4eb --version

(process:28067): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-sparc --version

(process:28069): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-sparc64 --version

(process:28071): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-tricore --version

(process:28073): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-unicore32 --version

(process:28075): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-x86_64 --version

(process:28077): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-xtensa --version

(process:28079): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-system-xtensaeb --version

(process:28081): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported
==> Downloading https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/FD12FLOPPY.zip
################################################################################################################################################################################################### 100.0%
==> /usr/local/Cellar/qemu/2.2.1_1/bin/qemu-img info FLOPPY.img
karen002ppc-osx104:~ karen$ brew audit qemu
karen002ppc-osx104:~ karen$ 

---

brew install qemu → PASS (OS X 10.5.8 [--cc=gcc-7 is required for now, I'm working on a PR to address this] and OS X 10.4.11, both PowerPC)
brew audit qemu → PASS
brew test qemu → PASS