check libhangul version on configure stage

ibus-hangul may depend on libhangul version, so we need to check it,
or ibus-hangul will not work as expected.
See this bug: https://bugzilla.redhat.com/show_bug.cgi?id=501212

diff --git a/configure.ac b/configure.ac
index 0009cf6..609871f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -54,7 +54,7 @@ PKG_CHECK_MODULES(IBUS, [
     ibus-1.0
 ])
 PKG_CHECK_MODULES(HANGUL, [
-    libhangul
+    libhangul >= 0.0.9
 ])
 
 # check env