Last batch of 'static' qualifiers for module-level global variables.

Fix up modules in the 'apps' directory, and also correct the bad example of
enum definitions in include/asterisk/app.h, which many developers followed
(thanks for reading the documentation!). In addition, add some basic usage
examples of the 'pahole' and 'pglobal' tools to the coding guidelines.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@200656 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_externalivr.c

@@ -95,11 +95,11 @@ static const char app[] = "ExternalIVR";
 /* XXX the parser in gcc 2.95 gets confused if you don't put a space between 'name' and the comma */
 #define ast_chan_log(level, channel, format, ...) ast_log(level, "%s: " format, channel->name , ## __VA_ARGS__)
 
-enum {
+enum options_flags {
 	noanswer = (1 << 0),
 	ignore_hangup = (1 << 1),
 	run_dead = (1 << 2),
-} options_flags;
+};
 
 AST_APP_OPTIONS(app_opts, {
 	AST_APP_OPTION('n', noanswer),