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portability: fix several issues with M4 subprocess.
[bison.git] / submodules /
2009-12-16  Joel E. Dennyautoconf: update to latest for fix of M4 detection.
2009-08-20  Eric BlakeImport latest m4/m4.m4.
2009-04-10  Eric Blakesubmodules: update to latest
2009-04-06  Akim DemailleReally add autoconf as a submodule.