This patch allows giving a list of items for the conditionals in package
lists. For example, it's possible to specify some packages for more than one
architecture in the same conditional block:
package01
#if ARCHITECTURE i386 amd64
package02
package03
#endif
package04
where package01 and package04 are available for all architectures, but
package02 and package03 are available only for i386 and amd64 architectures.
This patch adds support for simple conditionals in package lists. For
example, to limit a package to i386 only:
foo
#if ARCHITECTURE i386
package-only-in-i386
#endif
bar
Any variable that beings in LH_ can be expanded:
#if MODE ubuntu
package-only-in-ubuntu
#endif
Nesting of conditionals is not supported. If the variable to be expanded
does not exist, the conditional is false.