Updated NEWS for #66535
Updated news for #66535 and #66109
Fixed NEWS.
proc_open(): separate environment values that aren't strings

Added a test case
Updated news for #60602
Merge branch 'PHP-5.4' into PHP-5.5
Fixed news for #60602
Merge branch 'PHP-5.5' into PHP-5.6
Fixed NEWS for #60602
Merge branch 'PHP-5.6'