build: add PTHREAD_LIBS to LDFLAGS configure output

Also moves $PTHREAD_CFLAGS to the CFLAGS.

Author: fanquake

configure.ac

@@ -1684,10 +1684,10 @@ echo "  target os     = $TARGET_OS"
 echo "  build os      = $build_os"
 echo
 echo "  CC            = $CC"
-echo "  CFLAGS        = $CFLAGS"
+echo "  CFLAGS        = $PTHREAD_CFLAGS $CFLAGS"
 echo "  CPPFLAGS      = $DEBUG_CPPFLAGS $HARDENED_CPPFLAGS $CPPFLAGS"
 echo "  CXX           = $CXX"
 echo "  CXXFLAGS      = $DEBUG_CXXFLAGS $HARDENED_CXXFLAGS $WARN_CXXFLAGS $NOWARN_CXXFLAGS $ERROR_CXXFLAGS $GPROF_CXXFLAGS $CXXFLAGS"
-echo "  LDFLAGS       = $PTHREAD_CFLAGS $HARDENED_LDFLAGS $GPROF_LDFLAGS $LDFLAGS"
+echo "  LDFLAGS       = $PTHREAD_LIBS $HARDENED_LDFLAGS $GPROF_LDFLAGS $LDFLAGS"
 echo "  ARFLAGS       = $ARFLAGS"
 echo