Documentation Update - task-color.5

- Added the new task-color man page to the makefile, so it gets installed
  properly.
- Added the new man page in the ChangeLog file.

ChangeLog

@@ -53,6 +53,8 @@
  + The coloring of due tasks in reports can now be enabled for all tasks, and not
     only the imminent ones, by setting the configuration variable due=0.
  + Added a new 'task-faq' man page for common questions and answers.
+ + Added a new 'task-color' man page detailing how to set up and use color in
+   task.
  + Fixed bug #316 which caused the timesheet report to display an oddly sorted
    list.
  + Fixed bug #317 which colored tasks in the 'completed' report according to

Makefile.am

@@ -1,6 +1,6 @@
 SUBDIRS = src
 
-dist_man_MANS = doc/man/task.1 doc/man/taskrc.5 doc/man/task-tutorial.5 doc/man/task-faq.5
+dist_man_MANS = doc/man/task.1 doc/man/taskrc.5 doc/man/task-tutorial.5 doc/man/task-faq.5 doc/man/task-color.5
 
 docdir = $(datadir)/doc/${PACKAGE}-${VERSION}
 doc_DATA = AUTHORS ChangeLog COPYING NEWS README