Remove mostly all references to APACHE and CGI_BINARY from the code.
- Apache include files are no longer included by any PHP code, except for the Apache SAPI module.
- No server specific code is in any of the base PHP code.
Still left to be done:
- Eliminate any references to APACHE from the few remaining modules.
- Move request_info.c's logic to SAPI
- Modify the regex function names, and globals, so that we can always
include them, without having to fear any interference with Apache;
Always use the bundled regex library
- added support for externally built modules,
- improved support for in-tree shared modules,
- fixed diversion bugs,
- configure displays some informative messages,
- faster static build
(libtool isn't used anymore for compiling non-PIC objects),
- dependencies comparable to automake's without requiring GNU make or GCC,
- working make clean for non-GNU makes.
