automake: use shared llvm libs for make distcheck
automake: use shared llvm libs for make distcheck

Cc: "12.0 13.0" <4a7dc73e2393621c9290144a497188a9d4f7d87e@lists.freedesktop.org>
Signed-off-by: Emil Velikov <f20878473f414da183da19ee25c8722cc1d711e4@collabora.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler