scons: Fix SCons build infrastructure for FreeBSD.

This patch gets the FreeBSD SCons build working again. The build still
fails though.

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Brian Paul <brianp@vmware.com>

src/SConscript

@@ -22,7 +22,7 @@ SConscript('mesa/SConscript')
 SConscript('mapi/vgapi/SConscript')
 
 if not env['embedded']:
-    if env['platform'] not in ('cygwin', 'darwin', 'haiku', 'windows'):
+    if env['platform'] not in ('cygwin', 'darwin', 'freebsd', 'haiku', 'windows'):
         SConscript('glx/SConscript')
     if env['platform'] not in ['darwin', 'haiku', 'sunos']:
         SConscript('egl/main/SConscript')

src/gallium/SConscript

@@ -124,7 +124,7 @@ SConscript([
 ])
 
 if not env['embedded']:
-    if env['platform'] not in ('cygwin', 'darwin', 'haiku', 'sunos'):
+    if env['platform'] not in ('cygwin', 'darwin', 'freebsd', 'haiku', 'sunos'):
         SConscript([
             'targets/egl-static/SConscript'
         ])

src/gallium/winsys/sw/xlib/SConscript

@@ -4,7 +4,7 @@
 
 Import('*')
 
-if env['platform'] in ('cygwin', 'linux', 'sunos'):
+if env['platform'] in ('cygwin', 'freebsd', 'linux', 'sunos'):
 
     env = env.Clone()