[doc] Add Martin Jambor and Michael Matz to contrib.texi

[Gerald Pfeifer]

...a Honza/Gerald co-production. :-)  Applied.

Jakub, is this (and another one I should have in the next few
days) okay to backport even after RC1?

Gerald

2015-04-12  Jan Hubicka  <hubicka@ucw.cz>
	    Gerald Pfeifer  <gerald@pfeifer.com>

	* doc/contrib.texi (Contributors): Add Martin Jambor and
	Michael Matz.
 
Index: doc/contrib.texi
===================================================================
--- doc/contrib.texi	(revision 222022)
+++ doc/contrib.texi	(working copy)
@@ -434,6 +434,10 @@
 Andreas Jaeger for testing and benchmarking of GCC and various bug fixes.
 
 @item
+Martin Jambor for his work on inter-procedural optimizations, the
+switch conversion pass, and scalar replacement of aggregates.
+
+@item
 Jakub Jelinek for his SPARC work and sibling call optimizations as well
 as lots of bug fixes and test cases, and for improving the Java build
 system.
@@ -605,6 +609,10 @@
 improvements, and string clean up and testsuites.
 
 @item
+Michael Matz for his work on dominance tree discovery, the x86-64 port,
+link-time optimization framework and general optimization improvements.
+
+@item
 All of the Mauve project
 @uref{http://sourceware.org/cgi-bin/cvsweb.cgi/~checkout~/mauve/THANKS?rev=1.2&cvsroot=mauve&only_with_tag=HEAD,,contributors},
 for Java test code.