* change a few malloc's to calloc's so clang analyzer can see initialized data
* modify address computation in closure.c to avoid undefined behavior on
machines which do not support large offsets (analysis/patch by Jessica Clarke,
cf: 2014-09-17)
* testsuite and autotools/build script fixes
OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/byacc?expand=0&rev=42
