Skip test_config_tool_dep on MSYS2
Skip test_config_tool_dep on MSYS2

llvm-config --libfiles --link-shared wants to link to a bunch of shared
libraries which don't exist, so we end up at dev.py:308, but the guess
that makes ('libLLVM*.dll') doesn't take into account the existence of
implibs (which is fixable), but even if it did 'libLLVM-7.0.dll.a'
doesn't seem to exist... so not sure how to fix this...)

Also some steps towards making that work:

Adjust helper_create_binary_wrapper for MSYS2. The .bat wrapper should
run msys2 python, not try to invoke the 'py' python launcher (which may
not be present)

Suppress echoing of the command in helper_create_binary_wrapper
(otherwise the echoed command can interfere in interpreting the output
of the wrapped command, which seems to be the case when it's
llvm-config)

QuLogic/meson,QuLogic/meson,pexip/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,jpakkane/meson,mesonbuild/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,pexip/meson,QuLogic/meson,becm/meson,jpakkane/meson,jpakkane/meson,jpakkane/meson,QuLogic/meson,becm/meson,becm/meson,becm/meson,jpakkane/meson,pexip/meson,becm/meson,jpakkane/meson,pexip/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,becm/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,QuLogic/meson,becm/meson,QuLogic/meson,mesonbuild/meson,mesonbuild/meson,becm/meson,jpakkane/meson,becm/meson,pexip/meson,becm/meson,pexip/meson,mesonbuild/meson