Rename wsutil/floor.[ch] to wsutil/floorl.[ch].

That better indicates what they do - they don't supply floor(), as
that's a standard math.h feature dating back before C89, they supply
floorl().

Change-Id: Ib1278c51cdfc57680c28c51de87eafb2cb50c8eb
Reviewed-on: https://code.wireshark.org/review/5905
Reviewed-by: Guy Harris <guy@alum.mit.edu>

ui/time_shift.c

@@ -34,7 +34,7 @@
 #include "ui/ui_util.h"
 
 #ifndef HAVE_FLOORL
-# include "wsutil/floor.h"
+# include "wsutil/floorl.h"
 #endif
 
 #define SHIFT_POS               0

wsutil/Makefile.am

@@ -72,8 +72,8 @@ libwsutil_sse42_la_SOURCES = \
 libwsutil_sse42_la_CFLAGS = $(AM_CFLAGS) @CFLAGS_SSE42@
 
 EXTRA_libwsutil_la_SOURCES=	\
-	floor.c			\
-	floor.h			\
+	floorl.c		\
+	floorl.h		\
 	inet_aton.c		\
 	inet_aton.h		\
 	inet_ntop.c		\

wsutil/floorl.c

@@ -1,6 +1,6 @@
-/* floor.c
+/* floorl.c
  * 
- * Provides floor functions for systems that do not provide them
+ * Provides floorl function for systems that do not provide it
  *
  * Wireshark - Network traffic analyzer
  * By Gerald Combs <gerald@wireshark.org>
@@ -23,7 +23,7 @@
 
 #include "config.h"
 
-#include <glib.h>
+#include "wsutil/floorl.h"
 
 #ifndef HAVE_FLOORL
 long double

wsutil/floorl.h

@@ -1,6 +1,6 @@
-/* floor.c
+/* floorl.h
  * 
- * Provides floor functions for systems that do not provide them
+ * Declares floorl function for systems that do not provide it
  *
  * Wireshark - Network traffic analyzer
  * By Gerald Combs <gerald@wireshark.org>