(resolve_requested__no_suggests_) prevent urpmi from looping forever when some packages are broken

alternatively, we could try detecting if diff_provides doesn't change
for
a couple loops or not going over already rejected packages
(selecting/promoting/rejecting the same package forever)

eg: gtk+3.0-3.6.1-3.mga3.x86_64 is on the mirrors but not
lib64gtk+3_0-3.6.1-3.mga3.x86_64
we will then loop forever:

set_rejected: gtk+3.0-3.6.1-2.mga3.x86_64
installed lib64gtk+3_0-3.6.1-2.mga3.x86_64 is conflicting because of
unsatisfied gtk+3.0[== 3.6.1-2.mga3] gtk+3.0[*][== 3.6.1-2.mga3]
set_rejected: lib64gtk+3_0-3.6.1-2.mga3.x86_64
installed lib64gtk+3.0-devel-3.6.1-2.mga3.x86_64 is conflicting because
of unsatisfied lib64gtk+3_0[== 3.6.1]
set_rejected: lib64gtk+3.0-devel-3.6.1-2.mga3.x86_64
installed lib64gtk-gir3.0-3.6.1-2.mga3.x86_64 is conflicting because of
unsatisfied lib64gtk+3_0[== 3.6.1-2.mga3]
set_rejected: lib64gtk-gir3.0-3.6.1-2.mga3.x86_64
installed gtk+3.0-3.6.1-2.mga3.x86_64 is conflicting because of
unsatisfied lib64gtk+3_0[== 3.6.1]
promoting gtk+3.0-3.6.1-3.mga3.x86_64 because of conflict above
unselecting gtk+3.0-3.6.1-3.mga3.x86_64

set_rejected: gtk+3.0-3.6.1-2.mga3.x86_64
(...)

1 files changed, 2 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index ac8f1ae..f9e90f2 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,5 @@
+- prevent urpmi from looping forever when some packages are broken
+
 Version 4.15.1 - 11 October 2012
 
 - drop support for repackage (non working since rpm-4.6 in 2009)