[gtk-doc] Makefile.am,scan: clarify --igrnore-headers

[Stefan Kost <stefkost src gnome org>]

commit 2a9498decafe070c6512af36e9589b6c05442d23
Author: Stefan Kost <ensonic users sf net>
Date:   Fri Nov 26 12:02:28 2010 +0200

    Makefile.am,scan: clarify --igrnore-headers
    
    Aparently ignore-headers can be used to skip whole dirs as well.

 examples/Makefile.am |    4 ++--
 gtkdoc-scan.in       |    3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/examples/Makefile.am b/examples/Makefile.am
index 661491c..477b644 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -56,8 +56,8 @@ CFILE_GLOB=
 # e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h
 EXTRA_HFILES=
 
-# Header files to ignore when scanning. Use base file name, no paths
-# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h
+# Header files or dirs to ignore when scanning. Use base file/dir names
+# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h private_code
 IGNORE_HFILES=
 
 # Images to copy into HTML directory.
diff --git a/gtkdoc-scan.in b/gtkdoc-scan.in
index 4052b8d..8cb89f6 100755
--- a/gtkdoc-scan.in
+++ b/gtkdoc-scan.in
@@ -90,7 +90,8 @@ gtkdoc-scan version @VERSION@ - scan header files for public symbols
 
 --module=MODULE_NAME       Name of the doc module being parsed
 --source-dir=DIRNAME       Directories containing the source files to scan
---ignore-headers=FILES     A space-separated list of header files not to scan
+--ignore-headers=FILES     A space-separated list of header files/dirs not to
+                           scan
 --output-dir=DIRNAME       The directory where the results are stored
 --deprecated-guards=GUARDS A |-separated list of symbols used as deprecation
                            guards