comments on locale names, Java on OS X

git-svn-id: https://svn.r-project.org/R/trunk@69406 00db46b3-68df-0310-9c12-caf00c1e9a41

doc/manual/R-admin.texi

@@ -4846,14 +4846,15 @@ tclvalue(.Tcl("tk windowingsystem"))  # "x11" or "aqua"
 @node Java (OS X), Frameworks, Tcl/Tk headers and libraries, OS X
 @subsection Java
 
-The situation with Java support on OS X is messy.
+The situation with Java support on OS X is messy.@footnote{For more
+detals see @uref{http://www.macstrategy.com/article.php?3}.}
 
 OS X no longer comes with an installed Java runtime (JRE), and an OS X
 upgrade removes one if already installed: it is intended to be installed
 at first use.  Check if a JRE is installed by running @command{java
 -version} in a @command{Terminal} window: if Java is not installed this
 should prompt you to install it.  You can also install directly the
-latest Java from Oracle (currently Java 8 from
+latest Java from Oracle (currently from
 @uref{http://www.oracle.com/technetwork/java/javase/downloads/index.html}).
 
 You may need to install what Apple calls `legacy Java'@footnote{e.g.@:

doc/manual/R-exts.texi

@@ -4205,6 +4205,14 @@ specified by @option{-l} options) to be found from those directories,
 and libraries are searched once in the order they are specified.  Not
 all linkers allow a space after @option{-L} .
 
+@item
+Some people have a need to set a locale.  Locale names are not portable,
+and e.g.@: @samp{fr_FR.utf8} is common used on Linux but not accepted on
+either Solaris or OS X.  @samp{fr_FR.UTF-8} is more portable, being
+accepted on recent Linux, AIX, FreBSD, OS X and Solaris (at least).
+However, some Linux distributions micro-package, so locales defined by
+@pkg{glibc} (including these examples) may not be installed.
+
 @end itemize
 
 Do be careful in what your tests (and examples) actually test.  Bad