options: Fix up opts_set saving/restoring for underlying vars of Mask/InverseMask...

options: Fix up opts_set saving/restoring for underlying vars of Mask/InverseMask options

Seems I've missed that set_option has special treatment for
CLVC_BIT_CLEAR/CLVC_BIT_SET.
Which means I'll need to change the generic handling, so that for
global_options_set elements mentioned in CLVC_BIT_* options are treated
differently, instead of using the accumulated bitmasks they'll need to use
their specific bitmask variables during the option saving/restoring.

Here is a patch that implements that.

2020-10-03  Jakub Jelinek  <jakub@redhat.com>

	* opth-gen.awk: For variables referenced in Mask and InverseMask,
	don't use the explicit_mask bitmask array, but add separate
	explicit_mask_* members with the same types as the variables.
	* optc-save-gen.awk: Save, restore, compare and hash the separate
	explicit_mask_* members.