+2013-12-04 Pádraig Brady <P@draigBrady.com>
+
+ regex: suppress core dumps from detection code
+ * m4/regex.m4 (gl_REGEX): Catch the SIGABRT and convert to SIGTERM
+ to suppress core dumps that may well occur on glibc systems.
+ These core dumps might not be cleaned up automatically, or could
+ trigger some system core dump handling logic.
+
2013-12-03 Pádraig Brady <P@draigBrady.com>
md5, sha1, sha256, sha512: support mandating use of openssl