i386: enable REGPARM by default

This patch should _not_ go into Linus' tree.

At some time in the future, we want to unconditionally enable REGPARM on i386.

Let's give it a bit broader testing coverage among -mm users.

This patch:
- removes the dependency of REGPARM on EXPERIMENTAL
- let REGPARM default to y

This patch assumes that people who use -mm are willing to test some more experimental features.

After this patch, REGPARM is still a config option users can disable.

---

This patch was already sent on:
- 15 May 2005

@@ -911,9 +911,8 @@
 	default y
 
 config REGPARM
-	bool "Use register arguments (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
-	default n
+	bool "Use register arguments"
+	default y
 	help
 	Compile the kernel with -mregparm=3. This uses a different ABI
 	and passes the first three arguments of a function call in registers.