OTHER: rename 'lib' directory to 'backend_xmmsclient++'

I plan to replace the boost based c++ bindings with native Qt based bindings
in the long run
The currently there is libxmms2qt, but tru stated working on bindings based
on genipc

backend_xmmsclient++/wscript

@@ -50,7 +50,7 @@ def configure(conf):
     pass
 def build(bld):
     obj                 = bld.new_task_gen('qt4', 'cstaticlib', 'cxx')
-    obj.target          = 'promoe_lib'
+    obj.target          = 'backend_lib'
     obj.install_path    = 0 # Don't install
     obj.includes        = '.'
     obj.source          = lib_source

src/wscript

@@ -98,7 +98,7 @@ def build(bld):
     obj.target       = 'promoe'
     obj.includes     = incdirs
     obj.source       = sources
-    obj.uselib_local = 'promoe_lib'
+    obj.uselib_local = 'backend_lib'
     obj.add_objects  = 'promoe_data'
     obj.uselib       = 'QTCORE QTGUI AVAHI-CLIENT AVAHI-QT4'
     pass

wscript

@@ -45,7 +45,7 @@ def set_options(opt):
     opt.tool_options('gnu_dirs')
     opt.tool_options('qt4')
 
-    opt.sub_options('lib')
+    opt.sub_options('backend_xmmsclient++')
     opt.sub_options('data')
     opt.sub_options('src')
 
@@ -66,7 +66,7 @@ def configure(conf):
                 os.path.join(conf.env['PROMOE_DATADIR'], 'skins'))
 
 
-    conf.sub_config('lib')
+    conf.sub_config('backend_xmmsclient++')
     conf.sub_config('data')
     conf.sub_config('src')
 
@@ -76,7 +76,7 @@ def configure(conf):
     conf.env.append_value('CPPPATH', os.path.join(conf.blddir, conf.envname))
 
 def build(bld):
-    bld.add_subdirs('lib')
+    bld.add_subdirs('backend_xmmsclient++')
     bld.add_subdirs('data')
     bld.add_subdirs('src')