package.bbclass: Drop EXPORT_FUNCTIONS use against mapping_rename_hook

The usage of this function renaming and it being called using
bb.build.exec_func() causes needless indirection loops, confusing log
files and seems generally pointless.

This simplification makes the process much simpler and faster. I can't
come up with a good reason why the export_functions functionality is
needed for this function.

(From OE-Core rev: 74daad03ca29a03b0005f7d2b90a0347d5b583a5)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/package.bbclass

@@ -1788,7 +1788,7 @@ addtask package_write before do_build after do_package
 # Helper functions for the package writing classes
 #
 
-python package_mapping_rename_hook () {
+def mapping_rename_hook(d):
 	"""
 	Rewrite variables to account for package renaming in things
 	like debian.bbclass or manual PKG variable name changes
@@ -1799,6 +1799,4 @@ python package_mapping_rename_hook () {
 	runtime_mapping_rename("RPROVIDES", d)
 	runtime_mapping_rename("RREPLACES", d)
 	runtime_mapping_rename("RCONFLICTS", d)
-}
 
-EXPORT_FUNCTIONS mapping_rename_hook

meta/classes/package_deb.bbclass

@@ -330,7 +330,7 @@ python do_package_deb () {
             raise bb.build.FuncFailed("Missing field for deb generation: %s" % value)
         # more fields
 
-        bb.build.exec_func("mapping_rename_hook", localdata)
+        mapping_rename_hook(localdata)
 
         rdepends = bb.utils.explode_dep_versions(localdata.getVar("RDEPENDS", True) or "")
         for dep in rdepends:

meta/classes/package_ipk.bbclass

@@ -367,7 +367,7 @@ python do_package_ipk () {
 			raise bb.build.FuncFailed("Missing field for ipk generation: %s" % value)
 		# more fields
 
-		bb.build.exec_func("mapping_rename_hook", localdata)
+		mapping_rename_hook(localdata)
 
 		rdepends = bb.utils.explode_dep_versions(localdata.getVar("RDEPENDS", True) or "")
 		rrecommends = bb.utils.explode_dep_versions(localdata.getVar("RRECOMMENDS", True) or "")

meta/classes/package_rpm.bbclass

@@ -700,7 +700,7 @@ python write_specfile () {
 		translate_vers('RCONFLICTS', localdata)
 
 		# Map the dependencies into their final form
-		bb.build.exec_func("mapping_rename_hook", localdata)
+		mapping_rename_hook(localdata)
 
 		splitrdepends    = strip_multilib(localdata.getVar('RDEPENDS', True), d) or ""
 		splitrrecommends = strip_multilib(localdata.getVar('RRECOMMENDS', True), d) or ""