In the master branch, the encoding for most xml files have been
changed from latin-1 to utf-8. The problem is, that the corresponding
files in the maint branch still are encoded in latin-1, and that
a merge from maint to master may bring in characters encoded in latin-1
into a notes.xml file declared to be in utf-8.

To fix the problem once and for all (for the files involved), we'll
need to re-encode the files files utf-8 in maint, and then merge to
master.

Noticed-by: Magnus Henoch

Using the low-level BEAM instructions, we can loop over each message in
the process queue and removes the first message that matches, without
receiving them all to later send them back to itself.

The function prim_eval:'receive'/2 is equivalent to the
following pseudo-code:

  'receive'(F, T) ->
    RESET MESSAGE QUEUE POINTER,
    LOOP:
      case PEEK CURRENT MESSAGE WITH TIMEOUT T of
        {ok,Msg} ->
          case F(Msg) of
            nomatch ->
              DECREMENT TIMEOUT T,
              ADVANCE MESSAGE QUEUE POINTER,
              GOTO LOOP;
            Result ->
              RESET MESSAGE QUEUE POINTER,
              Result
          end;
        timeout ->
          RESET MESSAGE QUEUE POINTER,
          timeout
      end.

To not break Dialyzer and other tools, we use a stub Erlang module which
abstract code is forcefully inserted into prim_inet.erl afterwards
compilation.

Examples overflowing the width of PDF pages have been fixed.

The remaining warnings are due to table cells, and require more
work.

In the first traversal of library directories, reltool used only the
directory names in order to figure out application names. This would
succeed if the directory name was AppName only or AppName-AppVsn and
AppVsn consisted of integers separated by dots only. If the AppVsn has
any other format, then reltool would not find the correct application
name.

With this commit, reltool will first look for a .app file and use the
.app file name as the application name. This will allow different
formats of the version identifier in the directory name. Note that
reltool can still not sort (and select the latest) amongst version
identifiers of other format than integers separated by dots.