Add missing APLOGNO. Refactor some lines to keep APLOGNO on the same line as ap_log_error, when applicable. Split lines longer than 80. Improve alignment.

If a filename without slashes is specified for LoadFile or LoadModule and the file cannot be found in the server root directory, try to use the standard dlopen() search path.

Add lots of unique tags to error log messages

Cleanup effort in prep for GA push: Trim trailing whitespace... no func change

Add ap_find_module_short_name() to quickly get the module short name (i.e. symbol name with trailing "_module" removed) from the module_index. To be used for logging.

Use the new APLOG_USE_MODULE/AP_DECLARE_MODULE macros everywhere to take advantage of per-module loglevels

Here's the simpler solution to the two groups of mappers/ modules... The mod_so and mod_watchdog are truly not mappers/ at all. Very open to better names than modules/core/ but these are clearly API's which are to be consumed by the httpd core, or generically, any module.