[dunecontrol]

fix incompatibility with mawk

- explicitly state list of whitespaces
- patch by Ansgar Burchardt

[[Imported from SVN: r7452]]

COPYING

@@ -2,7 +2,7 @@ Copyright holders:
 
 2003--2010    Peter Bastian
 2004--2012    Markus Blatt
-2011--2012    Ansgar Burchardt
+2011--2013    Ansgar Burchardt
 2004--2005    Adrian Burri
 2006--2012    Andreas Dedner
 2003          Marc Droske

lib/dunemodules.lib

@@ -43,7 +43,7 @@ BLANK="$space$tab"
 # paramters:
 # $1 file to read
 #
-PARSER_TRIM="awk '{gsub(/^[[:space:]]+| +$/,\"\");printf(\"%s\", \$0);}'"
+PARSER_TRIM="awk '{gsub(/^[ \\t]+|[ \\t]+$/,\"\");printf(\"%s\", \$0);}'"
 parse_control() {
   # check file existence
   if test ! -f "$1" -o "$(basename $1)" != "$CONTROL"; then