BIND 10 trac3006, updated. fcbb1a926c62a986d97566002bf318822161a5e4 [3006] Use a more portable makefile pattern substitution syntax

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- Log -----------------------------------------------------------------
commit fcbb1a926c62a986d97566002bf318822161a5e4
Author: Mukund Sivaraman <muks at isc.org>
Date:   Thu Jun 27 06:58:18 2013 +0530

    [3006] Use a more portable makefile pattern substitution syntax

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Summary of changes:
 doc/design/datasrc/Makefile.am |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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diff --git a/doc/design/datasrc/Makefile.am b/doc/design/datasrc/Makefile.am
index f5e4a70..d339cd7 100644
--- a/doc/design/datasrc/Makefile.am
+++ b/doc/design/datasrc/Makefile.am
@@ -8,7 +8,7 @@ UML_FILES = \
 TEXT_FILES = \
 	data-source-classes.txt
 
-devel:	$(UML_FILES:.txt=.png) $(TEXT_FILES:.txt=.html)
+devel: $(patsubst %.txt, %.png, $(UML_FILES)) $(patsubst %.txt, %.html, $(TEXT_FILES))
 
 .txt.html:
 if HAVE_ASCIIDOC
@@ -25,6 +25,6 @@ else
 endif
 
 CLEANFILES = \
-	$(UML_FILES:.txt=.png) \
-	$(TEXT_FILES:.txt=.html) \
-	$(TEXT_FILES:.txt=.xml)
+	$(patsubst %.txt, %.png, $(UML_FILES)) \
+	$(patsubst %.txt, %.html, $(TEXT_FILES)) \
+	$(patsubst %.txt, %.xml, $(TEXT_FILES))