Add libxcb dependencies. Fix up packages to get py-basemap and stat to build.

var/spack/repos/builtin/packages/libxcb/package.py

@@ -35,18 +35,19 @@ class Libxcb(Package):
 
     version('1.11', '1698dd837d7e6e94d029dbe8b3a82deb')
     version('1.11.1', '118623c15a96b08622603a71d8789bf3')
+
     depends_on("python")
     depends_on("xcb-proto")
     depends_on("pkg-config")
-
-    # depends_on('pthread')    # Ubuntu: apt-get install libpthread-stubs0-dev
-    # depends_on('xau')        # Ubuntu: apt-get install libxau-dev
+    depends_on("libpthread-stubs")
+    depends_on('libxau')
 
     def patch(self):
         filter_file('typedef struct xcb_auth_info_t {', 'typedef struct {', 'src/xcb.h')
 
 
     def install(self, spec, prefix):
+        env['PKG_CONFIG_PATH'] = env['PKG_CONFIG_PATH'] + ':/usr/lib64/pkgconfig'
         configure("--prefix=%s" % prefix)
 
         make()