Avoid errors when optional meta files are not present

Fix a stupid bug in 'auto' dependency generator. I forgot to add .sw.devel
to the $pkgname making the prereq illegal (and causing gendist to core)

buildpkg.packaging.irix

@@ -5,7 +5,7 @@
 # Define tool programs
 # *only* platform specific packaging tools should be listed here
 # generic tools go in buildpkg.functions
-GENDIST=/usr/sbin/gendist
+GENDIST="/usr/sbin/gendist"
 
 GZIP=/usr/people/tgc/bin/gzip
 BZIP2=/usr/local/bin/bzip2
@@ -249,17 +249,19 @@ fetch_imageconf()
 #
 fetch_depends()
 {
+    if [ -r $depends ]; then
 	reqidx=0
 	while read ss req
 	do
 	    reqs[$reqidx]=$ss
 	    if [ "$req" == "auto" ]; then # auto create depend on sw.base
 		nver=$(fix_ver "$version-$pkgver")
-	    req="$pkgname $nver $nver"
+		req="$pkgname.sw.base $nver $nver"
 	    fi
 	    reqp[$reqidx]=$req
 	    let "reqidx = $reqidx + 1"
 	done < $depends
+    fi
 }
 
 # fetch_ops(): Fetch ops
@@ -268,6 +270,7 @@ fetch_depends()
 # and the opfiles and opscript arrays
 fetch_ops()
 {
+    if [ -r $opsfile ]; then
 	opsidx=0
 	while read optype op
 	do
@@ -283,18 +286,21 @@ fetch_ops()
 	    opscript[$opsidx]=$op	
 	    let "opsidx = $opsidx + 1"
 	done < $opsfile
+    fi
 }
 
 #fetch_hide(): Fetch list of files to "hide"
 #params: none
 fetch_hide()
 {
+    if [ -r $hidefile ]; then
 	hideidx=0
 	while read filen
 	do
 	    hide[$hideidx]=$filen
 	    let "hideidx = $hideidx + 1"
 	done < $hidefile
+    fi
 }
 
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