Fix Solaris linking.

Need to file an upstream bug

--- pygobject-3.16.1/configure.ac 2015-04-13 19:39:58.000000000 -0700

+++ pygobject-3.16.1/configure.ac 2015-06-04 13:06:43.904168525 -0700

@@ -51,7 +51,7 @@

AC_CANONICAL_BUILD

AC_CANONICAL_HOST

-AC_MSG_CHECKING([for build time linking with Python (Darwin and Win32)])

+AC_MSG_CHECKING([for build time linking with Python (Darwin, Solaris, and Win32)])

case "$host" in

*-*-mingw*|*-*-cygwin*)

os_win32=yes

@@ -63,6 +63,12 @@

link_python_libs=yes

OS_EXT=dylib

;;

+ *solaris*)

+ dnl Required due to -no-undefined linking.

+ os_win32=no

+ link_python_libs=yes

+ OS_EXT=so

+ ;;

*)

os_win32=no

link_python_libs=no