Update comments in php.ini
added missing INSTALL_ROOT
Fix php.ini-*'s comment about directive: request_order

request_order directive only support register G,P,C but not all of
the EGPCS global variables.

The doc <http://php.net/manual/en/ini.core.php#ini.request-order>
is ok.
Add BEGIN_EXTERN_C() and END_EXTERN_C() to .h files missing them.
Update NEWS after rebase.
Update the VM generation script, per Bob.
Fix php.ini-*'s comment about directive: request_order

request_order directive only support register G,P,C but not all of
the EGPCS global variables.

The doc <http://php.net/manual/en/ini.core.php#ini.request-order>
is ok.
Merge branch 'PHP-5.6'

* PHP-5.6:
  Fix php.ini-*'s comment about directive: request_order
Merge branch 'pull-request/872'

* pull-request/872:
  Fix php.ini-*'s comment about directive: request_order
added missing INSTALL_ROOT
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  added missing INSTALL_ROOT
Merge branch 'PHP-5.6'

* PHP-5.6:
  added missing INSTALL_ROOT
Merge branch 'pull-request/859'

* pull-request/859:
  added missing INSTALL_ROOT
Update comments in php.ini
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Update comments in php.ini
Merge branch 'PHP-5.6'

* PHP-5.6:
  Update comments in php.ini
Merge branch 'pull-request/850'

* pull-request/850:
  Update comments in php.ini
Merge branch 'pull-request/840' into PHP-5.5

* pull-request/840:
  Update the VM generation script, per Bob.
  Update NEWS after rebase.
  Add BEGIN_EXTERN_C() and END_EXTERN_C() to .h files missing them.
update NEWS
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  update NEWS
  Update the VM generation script, per Bob.
  Update NEWS after rebase.
  Add BEGIN_EXTERN_C() and END_EXTERN_C() to .h files missing them.