Fix bug #80402: Don't strip -lpthread

The current behavior has been introduced 20 years ago in
f9e375f as part of a larger change.
It's not clear to me why special treatement of -lpthread is necessary
here.

Author: nikic

NEWS

@@ -12,6 +12,7 @@ PHP                                                                        NEWS
     (al at coralnet dot name)
   . Fixed bug #80393 (Build of PHP extension fails due to configuration gap
     with libtool). (kir dot morozov at gmail dot com)
+  . Fixed bug #80402 (configure filtering out -lpthread). (Nikita)
 
 - Fileinfo:
   . Fixed bug #77961 (finfo_open crafted magic parsing SIGABRT). (cmb)

build/php.m4

@@ -498,7 +498,7 @@ dnl Internal, don't use.
 dnl
 AC_DEFUN([_PHP_ADD_LIBRARY_SKELETON],[
   case $1 in
-  c|c_r|pthread*[)] ;;
+  c|c_r[)] ;;
   *[)] ifelse($3,,[
     _PHP_X_ADD_LIBRARY($1,$2,$5)
   ],[