kernel/vm: Consolidate implementations of VMTranslationMap::UnmapArea.

This adds some new parameters to UnmapPage and UnmapPages. The important
one is a "_flags" pointer to UnmapPage, which if specified will be
filled with the page flags instead of PageUnmapped() being called
(and Flush() won't be invoked, either.)

This removes the remaining PAGE_STATE_* changes from VM architecture code.

Change-Id: Iacbc424dd8a75a79986edcd7f04d15a10f773c87
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8728
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>

headers/private/kernel/vm/VMTranslationMap.h

@@ -44,9 +44,12 @@ public:
 
 	// map not locked
 	virtual	status_t			UnmapPage(VMArea* area, addr_t address,
-									bool updatePageQueue) = 0;
+									bool updatePageQueue,
+									bool deletingAddressSpace = false,
+									uint32* _flags = NULL) = 0;
 	virtual	void				UnmapPages(VMArea* area, addr_t base,
-									size_t size, bool updatePageQueue);
+									size_t size, bool updatePageQueue,
+									bool deletingAddressSpace = false);
 	virtual	void				UnmapArea(VMArea* area,
 									bool deletingAddressSpace,
 									bool ignoreTopCachePageFlags);