[jhbuild] Add JHBUILD_LIBDIR to environment (GNOME bug 685337)

[Craig Keogh <cskeogh src gnome org>]

commit 5dad9d0003a9b5eaa56f726b6ec7e89d65e775f0
Author: Craig Keogh <cskeogh adam com au>
Date:   Tue Nov 6 21:47:11 2012 +1030

    Add JHBUILD_LIBDIR to environment (GNOME bug 685337)

 jhbuild/config.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/jhbuild/config.py b/jhbuild/config.py
index 8638d49..c430414 100644
--- a/jhbuild/config.py
+++ b/jhbuild/config.py
@@ -380,6 +380,7 @@ class Config:
             libdir = os.path.join(self.prefix, 'lib')
         self.libdir = libdir
         addpath('LD_LIBRARY_PATH', libdir)
+        os.environ['JHBUILD_LIBDIR'] = libdir
 
         # LDFLAGS and C_INCLUDE_PATH are required for autoconf configure
         # scripts to find modules that do not use pkg-config (such as guile