Add fault tolerance features to djpeg and jpegtran

- Enable progress reporting at run time using a new -report argument
  (cjpeg now supports that argument as well)
- Limit the allowable number of scans using a new -maxscans argument
- Treat warnings as fatal using a new -strict argument

This mainly demonstrates how to work around the two issues with the
JPEG standard described here:
https://libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf
since those and similar issues continue to be erroneously reported as
libjpeg-turbo bugs.

cjpeg.1

@@ -1,4 +1,4 @@
-.TH CJPEG 1 "18 March 2017"
+.TH CJPEG 1 "18 December 2019"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS
@@ -215,6 +215,9 @@ Compress to memory instead of a file.  This feature was implemented mainly as a
 way of testing the in-memory destination manager (jpeg_mem_dest()), but it is
 also useful for benchmarking, since it reduces the I/O overhead.
 .TP
+.BI \-report
+Report compression progress.
+.TP
 .B \-verbose
 Enable debug printout.  More
 .BR \-v 's