fix links to pdf in r.mapcalc documentation

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@54005 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.mapcalc/r.mapcalc.html

@@ -581,11 +581,11 @@ It is left to the user to utilize the isnull() function.
 
 
 <h2>SEE ALSO</h2>
-<b><a href="http://grass.osgeo.org/gdp/raster/mapcalc-algebra.pdf">r.mapcalc: An Algebra for GIS and Image
+<b><a href="http://grass.osgeo.org/uploads/grass/history_docs/mapcalc-algebra.pdf">r.mapcalc: An Algebra for GIS and Image
 Processing</a></b>, by Michael Shapiro and Jim Westervelt, U.S. Army
 Construction Engineering Research Laboratory (March/1991).
 <p> 
-<b><a href="http://grass.osgeo.org/gdp/raster/mapcalc.pdf">Performing Map Calculations on GRASS Data:
+<b><a href="http://grass.osgeo.org/uploads/grass/history_docs/mapcalc.pdf">Performing Map Calculations on GRASS Data:
 r.mapcalc Program Tutorial</a></b>, by Marji Larson, Michael Shapiro and Scott
 Tweddale, U.S. Army Construction Engineering Research Laboratory (December
 1991)

raster/r.mapcalc/r3.mapcalc.html

@@ -466,11 +466,11 @@ It is left to the user to utilize the isnull() function.
 
 
 <h2>SEE ALSO</h2>
-<b><a href="http://grass.osgeo.org/gdp/raster/mapcalc-algebra.pdf">r3.mapcalc: An Algebra for GIS and Image
+<b><a href="http://grass.osgeo.org/uploads/grass/history_docs/mapcalc-algebra.pdf">r3.mapcalc: An Algebra for GIS and Image
 Processing</a></b>, by Michael Shapiro and Jim Westervelt, U.S. Army
 Construction Engineering Research Laboratory (March/1991).
 <p> 
-<b><a href="http://grass.osgeo.org/gdp/raster/mapcalc.pdf">Performing Map Calculations on GRASS Data:
+<b><a href="http://grass.osgeo.org/uploads/grass/history_docs/mapcalc.pdf">Performing Map Calculations on GRASS Data:
 r.mapcalc Program Tutorial</a></b>, by Marji Larson, Michael Shapiro and Scott
 Tweddale, U.S. Army Construction Engineering Research Laboratory (December
 1991)