- drop tsrmls_fetch in tsrm_win32_access

- drop TSRMLS_FETCH in sapi_register_* (won't bring much at runtime :) ) and cleanup/group the upgrade guide, no need of twenty titles for the same change

- use TSRMLS_D/C with php_stream_context_alloc

- use TSRMLS_*C instead of TSRMLS_FETCH in zend_list_insert

- macros--; ZEND_FAST_* are now gone

- update and restore TOC

- Improved memory usage
. zend_function.pass_rest_by_reference is replaced by
ZEND_ACC_PASS_REST_BY_REFERENCE in zend_function.fn_flags
. zend_function.return_reference is replace

- Improved memory usage
. zend_function.pass_rest_by_reference is replaced by
ZEND_ACC_PASS_REST_BY_REFERENCE in zend_function.fn_flags
. zend_function.return_reference is replaced by ZEND_ACC_RETURN_REFERENCE
in zend_function.fn_flags
. zend_arg_info.required_num_args removed. it was needed only for internal
functions. Now the first arg_info for internal function (which has special
meaning) is represented by zend_internal_function_info structure.
. zend_op_array.size, size_var, size_literal, current_brk_cont,
backpatch_count moved into CG(context), because they are used only during
compilation.
. zend_op_array.start_op is moved into EG(start_op), because it's used
only for 'interactive' execution of single top-level op-array.
. zend_op_array.done_pass_two is replaced by ZEND_ACC_DONE_PASS_TWO in
zend_op_array.fn_flags.
. op_array.vars array is trimmed (reallocated) during pass_two.
. zend_class_entry.constants_updated is replaced by
ZEND_ACC_CONSTANTS_UPDATED in zend_class_entry.ce_flags
. the size of zend_class_entry is reduced by sharing the same memory space
by different information for internal and user classes.
See zend_class_inttry.info union.

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- add php_sys_readlink

- add php_sys_readlink

- add it for 5.3 as well

- typo/clarity

- upgrading addition about stat/lstat

- initial import, internals upgrade guide