HCFILES added filtering and logging details (#2567)

* Add reporting of filtering "Why?"
Add reporting of the actual error Condition on files that FAIL.
Change extraction of the "hcfiles-fails.txt" to a perl program since the Condition reporting sometimes is multiple lines.

* Change running of the getFails.pl that extracts FAIL information.
Also check if perl is installed, and report it if not into the fails file.

scripts/getFails.pl

@@ -0,0 +1,31 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+die "Usage: $0 <pattern1> <pattern2> [file...]\n" unless @ARGV >= 2;
+
+my $pat1 = shift;
+my $pat2 = shift;
+my $regex1line = qr/${pat1}.*?${pat2}/; # all on 1 line
+my $regexStart = qr/${pat1}/;            # the line has the start pattern
+my $regexEnd = qr/${pat2}/;              # the line has the end pattern
+
+my $flag = 0;
+
+while (<>) {
+    if ($flag) {                          # we're in a multi-line block
+        print;
+        if (/$regexEnd/) {               # does this line end the multi-line block?
+            $flag = 0;
+            print "\n";                   # separator
+        };
+    }
+    elsif (/$regex1line/) {             # all on 1 line
+        print;
+        print "\n";                      # separator
+    }
+    elsif (/$regexStart/) {             # begin a multi-line block
+        print;
+        $flag = 1;
+    }
+}