avoid "'" in comments - from graphviz_plugins-fix-install_dirs.patch backported from...

diff --git a/configure.ac b/configure.ac
index f2a3b857f30360a25d444c20b1343401369c9319..5fa6a5790f07da2e1657eca813bea63abc1d8f2a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -271,7 +271,7 @@ if `echo ${CFLAGS} | $GREP ffast-math >/dev/null`; then
 fi
 
 dnl -----------------------------------
-dnl Check for various typedefs and provide substitutes if they don't exist.
+dnl Check for various typedefs and provide substitutes if they do not exist.
                                                                                 
 AC_C_CONST
 AC_TYPE_MODE_T