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_skel.c

@@ -74,18 +74,18 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 
 static char *app = "Skel";
 
-enum {
+enum option_flags {
 	OPTION_A = (1 << 0),
 	OPTION_B = (1 << 1),
 	OPTION_C = (1 << 2),
-} option_flags;
+};
 
-enum {
+enum option_args {
 	OPTION_ARG_B = 0,
 	OPTION_ARG_C = 1,
 	/* This *must* be the last value in this enum! */
 	OPTION_ARG_ARRAY_SIZE = 2,
-} option_args;
+};
 
 AST_APP_OPTIONS(app_opts,{
 	AST_APP_OPTION('a', OPTION_A),