more portable perl shebangs (#7701)

same motivation as in #5816:

- distributions have scripts to rewrite shebangs on installation and
  they know what locations to rely on.
- For tests/compilation we should rather rely on the user to have setup
  there PATH correctly.

diff --git a/tools/check-includes.pl b/tools/check-includes.pl
index 079708397a8c90cba99faf1a074c7fad3b93f803..7f049da6d853deaf1d06d356f69a2e1e6e71f2b2 100755 (executable)
--- a/tools/check-includes.pl
+++ b/tools/check-includes.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 #
 # checkincludes: Find files included more than once in (other) files.
 # Copyright abandoned, 2000, Niels Kristian Bech Jensen <nkbj@image.dk>.