Improve script url validation
Include a comment before jsonp output
Add test cases for empty keys query parameter
improve parsing of mochiweb relative paths

Patch adapted from http://www.couchbase.com/issues/browse/MB-7390
update NEWS & CHANGES
use more docs in view_compaction test to ensure a difference
Update for release process

- CHANGES and NEWS
- support GPG_ARGS in Makefile.am using fix from 6dba2e9
- update acinclude.m4.in with release version
housekeeping after 1.2.1, prepare for 1.2.1