Bug 295659: if we're building for an XPI_NAMEd package, always use PIC, even

if we're not at the stage of constructing the component yet.  Otherwise we
end up mixing PIC and non-PIC code for components that are constructed out
of sub-archives (like storage, f.e.). r=bsmedberg.

config/config.mk

@@ -363,9 +363,9 @@ endif
 # build option.
 
 ifdef XPI_NAME
+_ENABLE_PIC=1
 ifdef IS_COMPONENT
 EXPORT_LIBRARY=
-_ENABLE_PIC=1
 FORCE_STATIC_LIB=
 FORCE_SHARED_LIB=1
 endif