Change version number from 5.0 to 5.0.0

Previous initial "major" releases were two-element only (e.g. 4.4);
beginning from repmgr 5 we want to ensure all version numbers have
three elements, for general consistency, including the generation
of package names.

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for repmgr 5.0.
+# Generated by GNU Autoconf 2.69 for repmgr 5.0.0.
 #
 # Report bugs to <[email protected]>.
 #
@@ -582,8 +582,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='repmgr'
 PACKAGE_TARNAME='repmgr'
-PACKAGE_VERSION='5.0'
-PACKAGE_STRING='repmgr 5.0'
+PACKAGE_VERSION='5.0.0'
+PACKAGE_STRING='repmgr 5.0.0'
 PACKAGE_BUGREPORT='[email protected]'
 PACKAGE_URL='https://repmgr.org/'
 
@@ -1181,7 +1181,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures repmgr 5.0 to adapt to many kinds of systems.
+\`configure' configures repmgr 5.0.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1242,7 +1242,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of repmgr 5.0:";;
+     short | recursive ) echo "Configuration of repmgr 5.0.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1316,7 +1316,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-repmgr configure 5.0
+repmgr configure 5.0.0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1335,7 +1335,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by repmgr $as_me 5.0, which was
+It was created by repmgr $as_me 5.0.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2487,7 +2487,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by repmgr $as_me 5.0, which was
+This file was extended by repmgr $as_me 5.0.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -2550,7 +2550,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-repmgr config.status 5.0
+repmgr config.status 5.0.0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 

configure.in

@@ -1,4 +1,4 @@
-AC_INIT([repmgr], [5.0], [[email protected]], [repmgr], [https://repmgr.org/])
+AC_INIT([repmgr], [5.0.0], [[email protected]], [repmgr], [https://repmgr.org/])
 
 AC_COPYRIGHT([Copyright (c) 2010-2019, 2ndQuadrant Ltd.])
 

repmgr_version.h.in

@@ -1,5 +1,5 @@
 #define REPMGR_VERSION_DATE ""
-#define REPMGR_VERSION "5.0"
+#define REPMGR_VERSION "5.0.0"
 #define REPMGR_VERSION_NUM 50000
 #define REPMGR_RELEASE_DATE "2019-10-15"
 #define PG_ACTUAL_VERSION_NUM