remove unused variables, merge from pecl/phar

WS merge from pecl/phar

Fixed bug #45613 Segfault when using is_file() on Apache-2.2.8

- Fix http://bugs.php.net/bug.php?id=45613

- ws/cs, macros, code that only affects other branches
- some unsynced changes need valgrind testing before they can go into this branch, see PECL/HEAD

drop unused var

fix function protos and is_link() wrapper

Fixed wrong refcount updates

Extensions MUST NOT manipulate with internal functions from EG(function_table) in run-time. It may cause problems with opcode caches and in multi-threaded environment. Now the same functions are over

Extensions MUST NOT manipulate with internal functions from EG(function_table) in run-time. It may cause problems with opcode caches and in multi-threaded environment. Now the same functions are overriden at MINIT and call original functions or PHAR ones dependent on flag setting.

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- Kill a couple of double frees and a memleak
@Greg: You may want to run valgrind over the filestat functions before release..

making progress - up to 42/phar vs. 48/disk with these optimizations

fix windows build and more performance jumps (these are minor)
implement real copy-on-write
use virtual_dirs for wrapper stat

HUGE speed improvement, from 19 req/sec to 27 req/sec for phpMyAdmin - now speed with apc+phar.cache_list = on-disk speedcvs diff -u |less This is by generating a list of virtual directories and usi

HUGE speed improvement, from 19 req/sec to 27 req/sec for phpMyAdmin - now speed with apc+phar.cache_list = on-disk speedcvs diff -u |less This is by generating a list of virtual directories and using those in stat calls instead of scanning the whole manifest hash table. on-disk phpMyAdmin = 28 req/sec

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ensure we don't try to use an unitialized hash table

fix error messages

- MFH
- Make internal code forward-compatible. This included a binary cast in the default stub, hence test updates.

This commit was manufactured by cvs2svn to create branch 'PHP_5_3'.