Add build rule for python3 (bug #58689). * src/build-python3.mk: Add build rule for python3 version 3.8.3. * dist-files.mk: Add new file to list. * index.html: Add new package to list. * src/build-setuptools.mk: Update to version 44.1.1 (last version compatible with python2). Use python2. Set installation prefix. * src/build-mako.mk: Use python2. Set installation prefix. * src/build-markupsafe.mk: Use python2. Set installation prefix. * src/mesa.mk: Windows rule depends on scons. Use python2. * src/nsis.mk: Depend on scons. Use python2.

diff -ur lcms2-2.9.orig/lcms2.pc.in lcms2-2.9/lcms2.pc.in
--- lcms2-2.9.orig/lcms2.pc.in	2017-12-04 16:39:09.491042791 -0500
+++ lcms2-2.9/lcms2.pc.in	2017-12-04 16:40:58.941757920 -0500
@@ -7,5 +7,6 @@
 Description: LCMS Color Management Library
 Version: @VERSION@
 Libs: -L${libdir} -llcms2
-Libs.private: @LIB_MATH@ @LIB_THREAD@
+Libs.private: -ljpeg @LIB_MATH@ @LIB_THREAD@
 Cflags: -I${includedir}
+Requires: libtiff-4