<p>This builds pharo.sista.spur with clang in order to workaround gcc bugs<br>
This also re-arrange the build matrix order for appveyor and build stages order for travis<br>
This also fix a compiler warning for ALSA sound, necessary for compiling with clang (it's treated as an error in clang, not in gcc)</p>
<p>[ci skip] the build is green in its branch and no concurrent feature happened, so let's not wait another pair of hours.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235'>https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Try and compile build.win32x86/pharo.sista.spur with clang to workaround gcc compiler bug</li>
  <li>Fix compilation error of ALSA sound with clang</li>
  <li>Compile linux32x86/pharo.sista.spur with clang</li>
  <li>Retry compilation of  linux32x86 pharo.sista.spur with clang</li>
  <li>Retry win32 pharo.cog.spur.lowcode with clang too</li>
  <li>Retry download cygwin setup 4x with curl</li>
  <li>Fix whitespace typo</li>
  <li>Add a main build stage for Squeak and Pharo</li>
  <li>Reorder the appveyor matrix so as to put main Squeak/Pharo build first</li>
  <li>Try to force CC=clang in the .travis.yml matrix for linux32x86 pharo.sista.spur</li>
  <li>Yet another incantation for compiling pharo.sista.spur with clang</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235/files#diff-0">.appveyor.yml</a>
    (36)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235/files#diff-1">.travis.yml</a>
    (32)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235/files#diff-2">build.linux32x86/pharo.sista.spur/build/mvm</a>
    (3)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235/files#diff-3">build.win32x86/pharo.cog.spur.lowcode/Makefile</a>
    (2)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235/files#diff-4">build.win32x86/pharo.sista.spur/Makefile</a>
    (4)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235/files#diff-5">platforms/unix/vm-sound-ALSA/sqUnixSoundALSA.c</a>
    (2)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235.patch'>https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235.patch</a></li>
  <li><a href='https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235.diff'>https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/235.diff</a></li>
</ul>

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