Fix mp_limb_t/ulong discrepancies in var/func decls.
Fix matching for powerpc64 in a case statement.
Fix for Darwin shared library name.
Better dependency for install target.
Share a common Makefile for all modules directories.
Missing common Makefile.
Use CFLAGS for testing and profiling.
Let the user override ABI with an environment variable.
Get rid of FLINT_TUNE variable, everything goes through CFLAGS.
Additionally this:
* Suppress a workaround needed by an obsolete GCC on ia64.
* Adds a fix for PPC G5 OS X.
* Use -funroll-loops unconditionally.