* [ATOM_EXT,SC] Changed atomic_atom/[2,3] to the simpler to_atom/2.
* [CHAR_EXT,NEW] New module for character support, including first_char/2, is_char/1, last_char/2, and to_chars/2.
* [DIR_EXT,SC] Removed subdirectories_to_directory/2; duplicating functionality in directory_subdirectories/2.
* [DIR_EXT,SC] Code simplifications in directory_subdirectories/2.
* [FILE_EXT,NEW] Added common_prefix_path/3 and prefix_path/2.
* [LIST_EXT,NEW] Added common_sublist/3.
* [NVPAIR_EXT,NEW] New module for name-value pair support. Includes nvpair/3, coming from OPTION_EXT.
* [REQUEST_EXT,NEW] New module for request list reading. Coming from URI_QUERY.
* [URI_QUERY,SC] Renamed, from URI_SEARCH.
* [URI_QUERY,SC] Shorter code by using meta-predicates for changing query strings / parameter lists.
Merge branch 'temp'