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Upgrade handling of shape specification.
Preserve CFLAGS in configure (Erik)
Squelch more warnings
Add subroutine resolution
Bump version to 0.17
Attempted to set up alloca in autoconf according to gnu docs. Also,
check.c requires stdlib.h to bring in alloca on Linux systems
Simplify configure.in in looking for the GMP libraries.
New version of configure.in
Steven Johnson's build scripts.
Remove Makefile, add support for autoconf.