Description of problem:
I'm not certain if this is glib's fault or not, but SCIM doesn't seem to build
with current rawhide: there are compile errors for the G_LOCK macros.  

Version-Release number of selected component (if applicable):
2.9.2

How reproducible:
every time

Steps to Reproduce:
1. rebuild scim on ppc
  
Actual results:
For example:
scim_panel_gtk.cpp:2335: error: invalid conversion from '_GMutex**' to 'void*
volatile*'
scim_panel_gtk.cpp:2335: error:   initializing argument 1 of 'void*
g_atomic_pointer_get(void* volatile*)'
:
scim_panel_gtk.cpp:2337: error: invalid conversion from '_GMutex**' to 'void*
volatile*'
scim_panel_gtk.cpp:2337: error:   initializing argument 1 of 'void*
g_atomic_pointer_get(void* volatile*)'
:
<other g_lock errors>

Expected results:
No errors.

Additional info:
2335:  G_LOCK (_global_resource_lock);
2337:  G_UNLOCK (_global_resource_lock);

This is with scim-1.4.4-1 in package cvs:
which builds fine on i386 and x86_64.