fish: Move display_*_options functions to a separate file.

By moving these two functions out of the common options parsing code,
it means we don't need to depend on all the other machinery of options
parsing, such as the global variables ("verbose"), libconfig, etc.

fuse/Makefile.am

@@ -40,6 +40,8 @@ bin_PROGRAMS = \
 # between guestfish and guestmount.
 SHARED_SOURCE_FILES = \
 	../fish/config.c \
+	../fish/display-options.h \
+	../fish/display-options.c \
 	../fish/domain.c \
 	../fish/inspect.c \
 	../fish/keys.c \

fuse/guestmount.c

@@ -41,6 +41,7 @@
 #include "ignore-value.h"
 
 #include "options.h"
+#include "display-options.h"
 
 static int write_pipe_fd (int fd);
 static int write_pid_file (const char *pid_file, pid_t pid);