Adjustments about libisoburn and xorriso dynamic dependencies

xorriso/README

@@ -128,11 +128,12 @@ second file to compare.
 Example: After
    xorriso ... -pathspecs on -add /=/original/dir --
    mount /media/dvd
+   cd test
 compare tree /media/dvd with tree /original/dir :
-   find /original/dir -exec compare_file '{}' /original/dir /media/dvd ';' \
+   find /original/dir -exec ./compare_file '{}' /original/dir /media/dvd ';' \
    | less
 and vice versa:
-   find /media/dvd -exec compare_file '{}' /media/dvd /original/dir ';' \
+   find /media/dvd -exec ./compare_file '{}' /media/dvd /original/dir ';' \
    | less
 
 
@@ -142,20 +143,25 @@ xorriso is based on libisofs which does ISO 9600 filesystem aspects and on
 libburn which does the input and output aspects. Parts of this foundation
 are accessed via libisoburn, which is closely related to xorriso.
 
-libisoburn takes care for the emulation of ISO 9660 multi-session on
-overwriteable media or random access files. It also encapsulates the
-coordination between libisofs and libburn.
+libisoburn provides two services:
+- Encapsulation of coordination between libisofs and libburn.
+- Emulation of ISO 9660 multi-session on overwriteable media
+  or random access files.
 
 The sourcecode of all three libraries is included in the xorriso standalone
-tarball.
-But you may as well get and install releases of libburn and libisofs,
-in order to be able to install a release of libisoburn which produces a
-dynamically linked xorriso binary. This binary is leaner but depends on
-properly installed libraries of suitable revision.
-
-Dynamic library requirements for libisoburn-0.1.0 :
-- libburn.so.4  , version 0.4.2 or higher
-- libisofs.so.6 , version 0.6.2 or higher
+tarball. It is compiled with xorriso and linked statically.
+But you may as well get and install releases of libburn and libisofs, in order
+to be able to install a release of libisoburn which produces libisoburn.so.1
+and a matching dynamically linked xorriso binary.
+This binary is leaner but depends on properly installed libraries of suitable
+revision.
+
+Dynamic library and compile time header requirements for libisoburn-0.1.0 :
+- libburn.so.4  , version libburn-0.4.2 or higher
+- libisofs.so.6 , version libisofs-0.6.2 or higher
+libisoburn and xorriso will not start with libraries which are older than their
+headers seen at compile time. So compile in the oldest possible installation
+setup unless you have reason to enforce a newer bug fix level.
 
 Standalone xorriso has less runtime dependencies and can be moved more freely.
 

xorriso/xorriso.1

@@ -1080,8 +1080,14 @@ subtracting already foreseeable consumption by next -commit.
 .TP
 \fB\-cd\fR iso_rr_path
 Change the current working directory in the emerging ISO
-image as it is at the moment. This typically is prepended to iso_rr_paths
+image as it is at the moment. This is prepended to iso_rr_paths
 which do not begin with '/'.
+.br
+It is possible to set the working directory to a path which does not exist
+yet in the ISO image. The necessary parent directories will be created when
+the first file object is inserted into that virtual directory.
+Use -mkdir if you want to enforce the existence of the directory already at
+first insertion.
 .TP
 \fB\-cdx\fR disk_path
 Change the current working directory on filesystem.