Split "action" functions to individual files

repmgr3's repmgr.c file was not far off 10,000 lines - this will make
it easier to manage individual parts of the code.

repmgr-client-global.h

@@ -0,0 +1,62 @@
+/*
+ * repmgr-client-global.h
+ * Copyright (c) 2ndQuadrant, 2010-2017
+ */
+
+#ifndef _REPMGR_CLIENT_GLOBAL_H_
+#define _REPMGR_CLIENT_GLOBAL_H_
+
+#include "config.h"
+
+typedef struct
+{
+	/* configuration metadata */
+	bool		conninfo_provided;
+	bool		connection_param_provided;
+	bool		host_param_provided;
+	bool		limit_provided;
+
+	/* general configuration options */
+	char		config_file[MAXPGPATH];
+	bool		force;
+	char		pg_bindir[MAXLEN]; /* overrides setting in repmgr.conf */
+
+	/* logging options */
+	char		loglevel[MAXLEN];  /* overrides setting in repmgr.conf */
+	bool		log_to_file;
+	bool		terse;
+	bool		verbose;
+
+	/* connection options */
+	char		superuser[MAXLEN];
+
+	/* node options */
+	int			node_id;
+	char		node_name[MAXLEN];
+	char		data_dir[MAXPGPATH];
+
+	/* event options */
+	char		event[MAXLEN];
+	int			limit;
+	bool		all;
+
+}	t_runtime_options;
+
+/* global configuration structures */
+extern t_runtime_options runtime_options;
+extern t_configuration_options config_file_options;
+
+
+extern bool	config_file_required;
+extern char	 pg_bindir[MAXLEN];
+
+extern char	 repmgr_slot_name[MAXLEN];
+extern char *repmgr_slot_name_ptr;
+
+extern t_node_info target_node_info;
+
+
+extern int check_server_version(PGconn *conn, char *server_type, bool exit_on_error, char *server_version_string);
+extern bool create_repmgr_extension(PGconn *conn);
+
+#endif