Fix "unterminated variable reference" on ancient versions of GNU make

Add a workaround for the GNU make that shipped with CentOS 4.9, which
apparently does not like semicolons in shell code (and which also
ignores info functions altogether by the way).

Corresponding to flashrom svn r1875.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/Makefile b/Makefile
index a36628c..1f39f41 100644
--- a/Makefile
+++ b/Makefile
@@ -382,7 +382,9 @@
 
 # Inform user if there is no meaningful version string. If there is version information from a VCS print
 # something anyway because $(info...) will print a line break in any case which would look suspicious.
-$(info $(shell ./util/getrevision.sh -c 2>/dev/null || echo "Files don't seem to be under version control." ; \
+# The && between the echos is a workaround for old versions of GNU make that issue the error "unterminated
+# variable reference" if a semicolon is used instead.
+$(info $(shell ./util/getrevision.sh -c 2>/dev/null || echo "Files don't seem to be under version control." && \
 	echo "Replacing all version templates with $(VERSION)." ))
 
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