...after dos2unix conversion.

Having an unaltered base point in tree makes future merges with
upstream much easier.

ref: http://my-basic.googlecode.com/svn/trunk@54

gets(3) is going away; it's been removed by C11, and gcc now warns on
it, breaking the build.

fix mod_basic clang build warning, we don't need to declare var we don't use on this side of the ifdef

This commit also reverts 2 previous attempts to fix this very rare race issue spanning back to 2009

62ce8538 Patch from MOC
3a85348c FS-2302 mutex added around switch_xml_toxml()

The real problem was switch_xml_toxml_buf() was actually temporarily modifying the xml structure being searialized to make it appaer to be a root structure then serializing it and restoring the pointers.  This caused a non-threadsafe operation when some other thread was scanning the same xml structure.

This patch removes the modification and instead passes a new arg to switch_xml_toxml_r indicating to treat the structure as if it were a root structure.

This bug has been present since the induction of xml into FS.

We already had uuid_answer and uuid_pre_answer, so we might as well
add uuid_ring_ready.

Since libedit originates from NetBSD, this and other BSDs use the
official version while Linux distributions tend to use the
autotoolized fork. The official version does not install a .pc file so
we cannot rely exclusively on pkg-config for detection.

FS-6408
Signed-off-by: Travis Cross <tc@traviscross.com>

Don't use CFLAGS or CXXFLAGS for this because AC_CHECK_HEADER only
uses CPPFLAGS.

FS-6408
Signed-off-by: Travis Cross <tc@traviscross.com>