configure: memalign fixes.

This fixes build problems on Mac OS and Solaris due
to the introduction of the use of memalign.

* configure: After detecting that __EXTENSIONS__ is
required on Solaris and adding that to lang_flags, we
must call gen_config_make so that it becomes available to
subsequent configure tests. On Solaris, memalign is just in
<stdlib.h>, so let's test for that first, then test for a
memalign in <malloc.h>, and in that case add HAVE_MALLOC_H
into config.h. Also, fixing two bugs here. Firstly, the
memalign test used inverted logic, causing HAVE_MEMALIGN
to be defined on platforms that don't have it. Secondly,
the dummy while loop that is just supposed to be a control
structure for forward breaks turned infinite due to a
missing break at the bottom.

* lib.c: if HAVE_MALLOC_H is defined and nonzero, then
include <malloc.h>.

0 files changed, 0 insertions, 0 deletions