Rename external commands directory from examples.

Fixes Homebrew/homebrew#10829.

Library/Contributions/brew_bash_completion.sh

@@ -374,7 +374,7 @@ _brew ()
     done
 
     if [[ $i -eq $COMP_CWORD ]]; then
-        local ext=$(\ls $(brew --repository)/Library/Contributions/examples \
+        local ext=$(\ls $(brew --repository)/Library/Contributions/cmds \
                 2>/dev/null | sed -e "s/\.rb//g" -e "s/brew-//g")
         __brewcomp "
             --cache --cellar --config

Library/Contributions/manpages/brew.1.md

@@ -322,10 +322,10 @@ scripts that reside somewhere in the PATH, named `brew-<cmdname>` or
 `brew-<cmdname>.rb`, which can be invoked like `brew cmdname`. This allows you
 to create your own commands without modifying Homebrew's internals.
 
-A number of (useful, but unsupported) example commands are included and enabled
+A number of (useful, but unsupported) external commands are included and enabled
 by default:
 
-    $ ls `brew --repository`/Library/Contributions/examples
+    $ ls `brew --repository`/Library/Contributions/cmds
 
 Documentation for the included external commands as well as instructions for
 creating your own can be found on the wiki:

bin/brew

@@ -71,7 +71,7 @@ begin
   cmd = aliases[cmd] if aliases[cmd]
 
   # Add example external commands to PATH before checking.
-  ENV['PATH'] += ":#{HOMEBREW_REPOSITORY}/Library/Contributions/examples"
+  ENV['PATH'] += ":#{HOMEBREW_REPOSITORY}/Library/Contributions/cmds"
   if system "/usr/bin/which -s brew-#{cmd}"
     %w[CACHE CELLAR LIBRARY_PATH PREFIX REPOSITORY].each do |e|
       ENV["HOMEBREW_#{e}"] = Object.const_get "HOMEBREW_#{e}"

share/man/man1/brew.1

@@ -353,13 +353,13 @@ Print the version number of brew to standard error and exit\.
 Homebrew, like \fBgit\fR(1), supports external commands\. These are executable scripts that reside somewhere in the PATH, named \fBbrew\-<cmdname>\fR or \fBbrew\-<cmdname>\.rb\fR, which can be invoked like \fBbrew cmdname\fR\. This allows you to create your own commands without modifying Homebrew\'s internals\.
 .
 .P
-A number of (useful, but unsupported) example commands are included and enabled by default:
+A number of (useful, but unsupported) external commands are included and enabled by default:
 .
 .IP "" 4
 .
 .nf
 
-$ ls `brew \-\-repository`/Library/Contributions/examples
+$ ls `brew \-\-repository`/Library/Contributions/cmds
 .
 .fi
 .