[gnome-builder] build: add llvm-config35 to the list of name of llvm-config

[Christian Hergert <chergert src gnome org>]

commit dca68a4d14d5647c4827e2f7b2b366146cdf7b1f
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sun Mar 29 02:06:04 2015 +0800

    build: add llvm-config35 to the list of name of llvm-config
    
    llvm-config35 is the default name in FreeBSD packages.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=747187

 build/autotools/autoconf.d/60_clang.pre-am |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/build/autotools/autoconf.d/60_clang.pre-am b/build/autotools/autoconf.d/60_clang.pre-am
index aef260c..82e972a 100644
--- a/build/autotools/autoconf.d/60_clang.pre-am
+++ b/build/autotools/autoconf.d/60_clang.pre-am
@@ -11,10 +11,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
 
 
 # Check clang deps for building clang support in LibIDE.
-AC_PATH_PROG([LLVM_CONFIG_3_5], [llvm-config-3.5])
-AS_IF([test "x$LLVM_CONFIG_3_5" = "x"],[
-  AC_PATH_PROG([LLVM_CONFIG], [llvm-config])
-],[LLVM_CONFIG=$LLVM_CONFIG_3_5])
+AC_CHECK_PROGS([LLVM_CONFIG], [llvm-config-3.5 llvm-config35 llvm-config], [])
 AS_IF([test "x$LLVM_CONFIG" = "x"],[
     AC_MSG_ERROR([Failed to locate the llvm-config program. Please install llvm-devel.])
 ])