Fix python library to load libibus.so.Y

TEST=Linux desktop

Review URL: https://codereview.appspot.com/5731060

ibus/_config.py.in

@@ -25,6 +25,7 @@ __all__ = (
     "get_copyright",
     "get_license",
     "get_ICON_KEYBOARD",
+    "LIBIBUS_SONAME",
     "ISOCODES_PREFIX",
     "_"
 )
@@ -55,4 +56,5 @@ def get_ICON_KEYBOARD():
         return fallback_icon
     return icon
 
+LIBIBUS_SONAME='libibus-@IBUS_API_VERSION@.so.@LT_CURRENT_MINUS_AGE@'
 ISOCODES_PREFIX='@ISOCODES_PREFIX@'

ibus/common.py

@@ -59,6 +59,7 @@ import os
 import sys
 from xdg import BaseDirectory
 import ctypes
+import _config
 
 # __display = os.environ["DISPLAY"]
 # __hostname, __display_screen = __display.split(":", 1)
@@ -104,7 +105,7 @@ import ctypes
 #         return None
 #     return address
 
-libibus = ctypes.CDLL("libibus-1.0.so.0")
+libibus = ctypes.CDLL(_config.LIBIBUS_SONAME)
 get_address = libibus.ibus_get_address
 get_address.restype=ctypes.c_char_p
 

ui/gtk3/Makefile.am

@@ -82,7 +82,7 @@ AM_VALAFLAGS = \
 
 libexec_PROGRAMS = ibus-ui-gtk3
 
-ibus_ui_gtk3_valas = \
+ibus_ui_gtk3_SOURCES = \
 	application.vala \
 	candidatearea.vala \
 	candidatepanel.vala \
@@ -94,11 +94,6 @@ ibus_ui_gtk3_valas = \
 	property.vala \
 	separator.vala \
 	switcher.vala \
-	$(NULL)
-ibus_ui_gtk3_vala_cfiles = $(ibus_ui_gtk3_valas:.vala=.c)
-
-ibus_ui_gtk3_SOURCES = \
-	$(ibus_ui_gtk3_valas) \
 	grabkeycode.c \
 	$(NULL)
 
@@ -108,7 +103,6 @@ ibus_ui_gtk3_LDADD = \
 
 CLEANFILES = \
 	gtkpanel.xml \
-	$(ibus_ui_gtk3_vala_cfiles) \
 	$(NULL)
 
 EXTRA_DIST = \