Recommend ICU in README, update .gitignore

Additionally enable XZ source tarball compression (as mentioned in the
README ;-) for quite some time)
Do not stop on possible autoconfigure warnings (this is for developers
and they are still able to use `auto(re)conf -Werror` for local tests).

Author: carstene1ns

.gitignore

@@ -4,7 +4,6 @@
 /builds/autoconf/
 !/builds/autoconf/m4/m4_ax_pkg_check_modules.m4
 /liblcf-*/
-/test_runner*
 .deps/
 .libs/
 .dirstamp
@@ -15,7 +14,7 @@ config.h.in
 config.log
 config.status
 configure
-liblcf-*.tar.gz
+liblcf-*.tar.*
 libtool
 stamp-h1
 *.la
@@ -54,4 +53,4 @@ Makefile
 *.pc
 
 # tests
-/tests/test_runner*
+test_runner*

README.md

@@ -15,7 +15,7 @@ Documentation is available at the documentation wiki: https://wiki.easyrpg.org
 ## Requirements
 
 Expat for XML reading support.
-ICU for character encoding detection and conversion.
+ICU for character encoding detection and conversion (recommended).
 
 
 ## Source code

builds/autoconf/m4/ax_pkg_check_modules.m4

@@ -1,5 +1,5 @@
 # ===========================================================================
-#   http://www.gnu.org/software/autoconf-archive/ax_pkg_check_modules.html
+#   https://www.gnu.org/software/autoconf-archive/ax_pkg_check_modules.html
 # ===========================================================================
 #
 # SYNOPSIS
@@ -50,7 +50,7 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.
 
-#serial 2
+#serial 3
 
 AC_DEFUN([AX_PKG_CHECK_MODULES],[
     m4_define([ax_package_requires],

configure.ac

@@ -5,7 +5,7 @@ AC_PREREQ([2.69])
 AC_INIT([liblcf],[0.5.2],[https://github.com/EasyRPG/liblcf/issues],[liblcf],[https://easyrpg.org/])
 
 AC_CONFIG_AUX_DIR([builds/autoconf])
-AM_INIT_AUTOMAKE([1.11.4 foreign subdir-objects -Wall -Werror])
+AM_INIT_AUTOMAKE([1.11.4 foreign subdir-objects -Wall dist-xz])
 AM_MAINTAINER_MODE([enable])
 AM_SILENT_RULES([yes])