* Update autoconf macro usage.
check for a C99 compliant vsnprintf.
Simplify checking for broken snprintf/vsnprintf functions.
Cygwin's binmode static library name was wrong.
Made a few cosmetic changes to the configure macros (synch 1.6).
Shared tcl libraries wern't recognised properly on cygwin32 (synch 1.6).
Removed a trick needed by autoconf 2.53 to access the LIBOBJS variable without getting an error on bootstrap, since autoconf 2.52 didn't like it.
If ngettext isn't available in the eventual gettext library available on the system, switch to our own.
* Got rid of STATIC and the related code. We don't need to care if we have a static build these days.
* Fixed a typo in acconfig/acinclude.m4.
Added support for mpatrol (mutally exclusive with efence).