Merging upstream version 1.13~rc1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

INSTALL

@@ -18,8 +18,8 @@ Procedure
 or
 	lzip -cd pdlzip[version].tar.lz | tar -xf -
 
-This creates the directory ./pdlzip[version] containing the source from
-the main archive.
+This creates the directory ./pdlzip[version] containing the source code
+extracted from the archive.
 
 2. Change to pdlzip directory and run configure.
    (Try 'configure --help' for usage instructions).
@@ -27,6 +27,10 @@ the main archive.
 	cd pdlzip[version]
 	./configure
 
+   If you choose a C standard, enable the POSIX features explicitly:
+
+	./configure CFLAGS+='--std=c99 -D_XOPEN_SOURCE=500'
+
    If you are compiling on MinGW, use:
 
 	./configure CFLAGS+='-D __USE_MINGW_ANSI_STDIO'
@@ -38,7 +42,8 @@ the main archive.
 4. Optionally, type 'make check' to run the tests that come with pdlzip.
 
 5. Type 'make install' to install the program and any data files and
-   documentation.
+   documentation. You need root privileges to install into a prefix owned
+   by root.
 
    Or type 'make install-compress', which additionally compresses the
    man page after installation.
@@ -61,15 +66,15 @@ object files and executables to go and run the 'configure' script.
 'configure' automatically checks for the source code in '.', in '..', and
 in the directory that 'configure' is in.
 
-'configure' recognizes the option '--srcdir=DIR' to control where to
-look for the sources. Usually 'configure' can determine that directory
+'configure' recognizes the option '--srcdir=DIR' to control where to look
+for the source code. Usually 'configure' can determine that directory
 automatically.
 
 After running 'configure', you can run 'make' and 'make install' as
 explained above.
 
 
-Copyright (C) 2010-2022 Antonio Diaz Diaz.
+Copyright (C) 2010-2023 Antonio Diaz Diaz.
 
 This file is free documentation: you have unlimited permission to copy,
 distribute, and modify it.