Include <sys/capaibility.h> to get _LINUX_CAPABILITY_VERSION defined.

It's no longer used in version_info.c, but is used in the main source
files of TShark and Wireshark (it's already included in dumpcap).

Change-Id: I2169a2bbed678baf26fc8711d7c13d95cce3ee2a
Reviewed-on: https://code.wireshark.org/review/2819
Reviewed-by: Guy Harris <guy@alum.mit.edu>

tshark.c

@@ -55,6 +55,10 @@
 #include <zlib.h>	/* to get the libz version number */
 #endif
 
+#ifdef HAVE_LIBCAP
+# include <sys/capability.h>
+#endif
+
 #ifndef HAVE_GETOPT
 #include "wsutil/wsgetopt.h"
 #endif

ui/gtk/main.c

@@ -49,6 +49,10 @@
 #include <zlib.h>	/* to get the libz version number */
 #endif
 
+#ifdef HAVE_LIBCAP
+# include <sys/capability.h>
+#endif
+
 #ifdef _WIN32 /* Needed for console I/O */
 
 #include <fcntl.h>

ui/qt/main.cpp

@@ -113,6 +113,10 @@
 #  include <capchild/capture_sync.h>
 #endif
 
+#ifdef HAVE_LIBCAP
+# include <sys/capability.h>
+#endif
+
 #ifdef _WIN32
 #  include "capture-wpcap.h"
 #  include "capture_wpcap_packet.h"

version_info.c

@@ -39,10 +39,6 @@
 #include <wsutil/cpu_info.h>
 #include <wsutil/mem_info.h>
 
-#ifdef HAVE_LIBCAP
-# include <sys/capability.h>
-#endif
-
 /*
  * If the string doesn't end with a newline, append one.
  * Then word-wrap it to 80 columns.