Fix Intel compiler deprecated options (#485)

Options `-we ###` and `-wd ###` should not include a whitespace. They are also deprecated and `-diag-error` and `-diag-disable` are their replacements.

Intel compiler 2021.6 is not able to be used in configure without the proposed patch.

Fix By: Stephen Sachs (@stephenmsachs)

m4/cares-compilers.m4

@@ -609,12 +609,12 @@ AC_DEFUN([CARES_SET_COMPILER_BASIC_OPTS], [
         dnl #147: declaration is incompatible with 'previous one'
         dnl #165: too few arguments in function call
         dnl #266: function declared implicitly
-        tmp_CPPFLAGS="$tmp_CPPFLAGS -we 140,147,165,266"
+        tmp_CPPFLAGS="$tmp_CPPFLAGS -diag-error 140,147,165,266"
         dnl Disable some remarks
         dnl #279: controlling expression is constant
         dnl #981: operands are evaluated in unspecified order
         dnl #1469: "cc" clobber ignored
-        tmp_CPPFLAGS="$tmp_CPPFLAGS -wd 279,981,1469"
+        tmp_CPPFLAGS="$tmp_CPPFLAGS -diag-disable 279,981,1469"
         ;;
         #
       INTEL_WINDOWS_C)