[gtksourceview] build: improve order of top-level SUBDIRS

[Sébastien Wilmet <swilmet src gnome org>]

commit 1ffb7eb3a33365880ad618785a79869f0d2add4a
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Apr 23 16:16:57 2017 +0200

    build: improve order of top-level SUBDIRS
    
    When I run `make check`, I needed to scroll up to see the summary result
    for the unit tests, because traversing the win32 directories adds a lot
    of lines to the output (Entering/Leaving directory [...]).
    
    With testsuite towards the end, I'm now able to see the summary result
    directly.

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 9513709..bf0be8f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-SUBDIRS = po data gtksourceview tests testsuite win32 docs
+SUBDIRS = po data gtksourceview win32 tests testsuite docs
 
 @CODE_COVERAGE_RULES@