add clang32 to more packages.

All packages which successfully built on clang64, for which all of their
dependencies are already available for clang32.

Batch 2

mingw-w64-python-multiprocess/PKGBUILD

@@ -7,7 +7,7 @@ pkgver=0.70.11.1
 pkgrel=1
 pkgdesc='better multiprocessing and multithreading in python (mingw-w64)'
 arch=('any')
-mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64')
+mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
 url="http://multiprocess.rtfd.io/"
 license=('BSD')
 depends=("${MINGW_PACKAGE_PREFIX}-python-dill")