Solaris requires fcntl.h for open() and friends

brltty defines logMessage & friends in log.h

Fixes build errors:

brltty-5.4/Programs/beep_solaris.c: In function 'getKeyboard':

brltty-5.4/Programs/beep_solaris.c:30:21: warning: implicit declaration of

  function 'open' [-Wimplicit-function-declaration]

     if ((keyboard = open("/dev/kbd", O_WRONLY)) != -1) {

                     ^

brltty-5.4/Programs/beep_solaris.c:30:38: error: 'O_WRONLY' undeclared

  (first use in this function)

     if ((keyboard = open("/dev/kbd", O_WRONLY)) != -1) {

                                      ^

brltty-5.4/Programs/beep_solaris.c:32:7: warning: implicit declaration of

  function 'logMessage' [-Wimplicit-function-declaration]

       logMessage(LOG_DEBUG, "keyboard opened: fd=%d", keyboard);

       ^

brltty-5.4/Programs/beep_solaris.c:32:18: error: 'LOG_DEBUG' undeclared

  (first use in this function)

       logMessage(LOG_DEBUG, "keyboard opened: fd=%d", keyboard);

                  ^

brltty-5.4/Programs/beep_solaris.c:34:7: warning: implicit declaration of

  function 'logSystemError' [-Wimplicit-function-declaration]

       logSystemError("keyboard open");

       ^

brltty-5.4/Programs/pcm_audio.c: In function 'openPcmDevice':

brltty-5.4/Programs/pcm_audio.c:40:32: warning: implicit declaration of

  function 'open' [-Wimplicit-function-declaration]

     if ((pcm->fileDescriptor = open(device, O_WRONLY|O_NONBLOCK)) != -1) {

                                ^

brltty-5.4/Programs/pcm_audio.c:40:45: error: 'O_WRONLY' undeclared

  (first use in this function)

     if ((pcm->fileDescriptor = open(device, O_WRONLY|O_NONBLOCK)) != -1) {

brltty-5.4/Programs/pcm_audio.c:40:54: error: 'O_NONBLOCK' undeclared

  (first use in this function)

     if ((pcm->fileDescriptor = open(device, O_WRONLY|O_NONBLOCK)) != -1) {

                                                      ^

brltty-5.4/Programs/pcm_audio.c:56:61: warning: implicit declaration of

  function 'strerror' [-Wimplicit-function-declaration]

         logMessage(errorLevel, "Cannot set audio info: %s", strerror(errno));

                                                             ^

brltty-5.4/Programs/pcm_audio.c:56:70: error: 'errno' undeclared

  (first use in this function)

         logMessage(errorLevel, "Cannot set audio info: %s", strerror(errno));

                                                                      ^

--- brltty-5.4/Programs/beep_solaris.c

+++ brltty-5.4/Programs/beep_solaris.c

@@ -18,6 +18,8 @@

 #include "prologue.h"

+#include "log.h"

+#include <fcntl.h>

 #include <sys/kbio.h>

 #include <sys/kbd.h>

--- brltty-5.4/Programs/pcm_audio.c

+++ brltty-5.4/Programs/pcm_audio.c

@@ -19,5 +19,8 @@

 #include "prologue.h"

+#include <string.h>

+#include <errno.h>

+#include <fcntl.h>

 #include <sys/audio.h>

 #include <stropts.h>