[WWcvs] webwork2: replaced $externalPrograms{netpbm} with lexical

[Sam H. v. a. <we...@ma...>]

Log Message:
-----------
replaced $externalPrograms{netpbm} with lexical $netpbm_prefix. this 
will prevent netpbm from going into the cource environment (where is it 
not needed) and makes it clear that it is a prefix and not the path to a 
program.

Modified Files:
--------------
    webwork2/conf:
        global.conf.dist

Revision Data
-------------
Index: global.conf.dist
===================================================================
RCS file: /webwork/cvs/system/webwork2/conf/global.conf.dist,v
retrieving revision 1.132
retrieving revision 1.133
diff -Lconf/global.conf.dist -Lconf/global.conf.dist -u -r1.132 -r1.133
--- conf/global.conf.dist
+++ conf/global.conf.dist
@@ -61,12 +61,12 @@
 
 # Basic image manipulation utilities
 #  Most sites only need to configure the first line
-$externalPrograms{netpbm} = "/usr/bin/"; # Really a prefix, rather than a program
-$externalPrograms{giftopnm} = $externalPrograms{netpbm}.'giftopnm';
-$externalPrograms{ppmtopgm} = $externalPrograms{netpbm}.'ppmtopgm';
-$externalPrograms{pnmtops}  = $externalPrograms{netpbm}.'pnmtops';
-$externalPrograms{pnmtopng} = $externalPrograms{netpbm}.'pnmtopng';
-$externalPrograms{pngtopnm} = $externalPrograms{netpbm}.'pngtopnm';
+my $netpbm_prefix = "/usr/bin";
+$externalPrograms{giftopnm} = "$netpbm_prefix/giftopnm";
+$externalPrograms{ppmtopgm} = "$netpbm_prefix/ppmtopgm";
+$externalPrograms{pnmtops}  = "$netpbm_prefix/pnmtops";
+$externalPrograms{pnmtopng} = "$netpbm_prefix/pnmtopng";
+$externalPrograms{pngtopnm} = "$netpbm_prefix/pngtopnm";
 
 # The following lines are the external scripts gif2eps, etc.
 #   The source file is input with cat, and the output is redirected to