RCG: some $target/chans directories if needed

Create chans/ipc/.ipc if missing during build Create chans/tmp if missing during installation

Closes #224 (closed) and #2 (closed)

src/epics/util/lib/IPCmonitor.pm

 package CDS::IPCmonitor;
 use Exporter;
+use File::Path;
 @ISA = ('Exporter');
 
 #//	\page IPCx IPCx.pm
@@ -227,11 +228,17 @@ my @ipcxMaxNum = (-999,-999,-999,-999);
 
    # Develop name of IPC parameter file based on return from above.
         #my ($i) = @_;
-	my $iFile = $::target;
-	$iFile .= "/chans/ipc/";
-	$iFile .= $::ifo;
-	$iFile .= "\.ipc";
+        my $iFilePath =  $::target;
+	$iFilePath .= "/chans/ipc/";
+	my $iFile .= $iFilePath . $::ifo;
+        $iFile .= "\.ipc";
    # Open and input data from IPC parameter file
+   File::Path::make_path($iFilePath);
+   unless (-e $iFile)
+   {
+   	open(TOUCH, ">>$iFile");
+   	close(TOUCH);
+   }
    open(IPCIN, "<$iFile") || die "***ERROR: IPCx parameter file $iFile not found\n";
    chomp(@inData=<IPCIN>);
    close IPCIN;