ari: User better nicknames for ARI operations

While working on building client libraries from the Swagger API, I
noticed a problem with the nicknames.

    channel.deleteChannel()
    channel.answerChannel()
    channel.muteChannel()

Etc. We put the object name in the nickname (since we were generating C
code), but it makes OO generators redundant.

This patch makes the nicknames more OO friendly. This resulted in a lot
of name changing within the res_ari_*.so modules, but not much else.

There were a couple of other fixed I made in the process.

 * When reversible operations (POST /hold, POST /unhold) were made more
   RESTful (POST /hold, DELETE /unhold), the path for the second operation
   was left in the API declaration. This worked, but really the two
   operations should have been on the same API.
 * The POST /unmute operation had still not been REST-ified.

Review: https://reviewboard.asterisk.org/r/2940/
........

Merged revisions 402528 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@402529 65c4cc65-6c06-0410-ace0-fbb531ad65f3

rest-api-templates/asterisk_processor.py

@@ -157,6 +157,7 @@ class AsteriskProcessor(SwaggerPostProcessor):
         # Now in all caps, for include guard
         resource_api.name_caps = resource_api.name.upper()
         resource_api.name_title = resource_api.name.capitalize()
+        resource_api.c_name = snakify(resource_api.name)
         # Construct the PathSegement tree for the API.
         if resource_api.api_declaration:
             resource_api.root_path = PathSegment('', None)
@@ -182,7 +183,7 @@ class AsteriskProcessor(SwaggerPostProcessor):
         api.wiki_path = wikify(api.path)
 
     def process_operation(self, operation, context):
-        # Nicknames are camelcase, Asterisk coding is snake case
+        # Nicknames are camelCase, Asterisk coding is snake case
         operation.c_nickname = snakify(operation.nickname)
         operation.c_http_method = 'AST_HTTP_' + operation.http_method
         if not operation.summary.endswith("."):