5798 fexecve() needed per POSIX 2008

*** 51,60 ****
--- 51,63 ----
  file path=opt/libc-tests/cfg/symbols/ucontext_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/unistd_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/wchar_h.cfg mode=0444
  file path=opt/libc-tests/cfg/symbols/wctype_h.cfg mode=0444
  file path=opt/libc-tests/runfiles/default.run mode=0444
+ file path=opt/libc-tests/tests/fexecve_test mode=0555
+ file path=opt/libc-tests/tests/fexecve_test.$(ARCH) mode=0555
+ file path=opt/libc-tests/tests/fexecve_test.$(ARCH64) mode=0555
  file path=opt/libc-tests/tests/fpround_test mode=0555
  file path=opt/libc-tests/tests/fpround_test.$(ARCH) mode=0555
  file path=opt/libc-tests/tests/fpround_test.$(ARCH64) mode=0555
  file path=opt/libc-tests/tests/newlocale_test mode=0555
  file path=opt/libc-tests/tests/newlocale_test.$(ARCH) mode=0555