- Update to version 1.74.1
Version 1.74.1 4 Jan 17

* Configuration changes to support the patch number in the
version (major.minor.patch).
* Removed all remaining pixDisplayWrite() calls in prog/.
* Cleaned up and/or promoted about 15 programs to full regression
tests. There are now 95 tests in the regression set.
* Over half the initial coverity scan warnings have been removed.
Version 1.74.0 10 Dec 16
* Leptonica development was moved to github. The master is at:
github.com/danbloomberg/leptonica
* New modes for RGB --> gray conversion.
* New functions added for displaying a pix from a pixa.
* Split out sort/hash/set/map functions for dna, sarray and pta.
* More robust horizontal deskew on multi-column page images.
* Improve webpio_reg test.
* Remove X11 display for gplot; it is no longer supported.
* Remove most sleep calls, which were put in for gplot; no longer needed.
* Removed use of gthumb in library.
* Removed use of pixDisplayWrite() in the library; still in some progs.
* Improved test for endianness in makefile.static; no longer requires
any local files or building and running a program.
* Modified all files for doxygen output (spearheaded by Jurgen Buchmuller)
* Improved plotting of the boxes in a boxa.
* Replaced the slow point hash function with a simple fast one.
* Added pam (4 component) format writing to pnmio.c (Jurgen Buchmuller)
* Improved rendering of pixa in side/by/sides.
* Better utilities for pixa and pixacomp.
* Add read/write serialization functions from/to memory for all