[gimp] configure.ac: add devel-docs/performance-logs/Makefile

[Ell <ell src gnome org>]

commit a75c57f2cd0221974402d7297acdac50778a66fe
Author: Ell <ell_se yahoo com>
Date:   Thu Nov 8 03:51:11 2018 -0500

    configure.ac: add devel-docs/performance-logs/Makefile
    
    Skipped for now on master, together with the rest of devel-docs/.
    
    Should have been part of fa9161e4f2738fb78af63f21ce0cc487efeb687a.

 configure.ac | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/configure.ac b/configure.ac
index a69d78aa72..b39e20747c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2875,6 +2875,7 @@ dnl devel-docs/libgimpthumb/Makefile
 dnl devel-docs/libgimpthumb/version
 dnl devel-docs/libgimpwidgets/Makefile
 dnl devel-docs/libgimpwidgets/version
+dnl devel-docs/performance-logs/Makefile
 dnl devel-docs/tools/Makefile
 [
 docs/Makefile