sci-physics/root: root experimental

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+<herd>sci-physics</herd>
+<longdescription lang="en">
+  ROOT Object Oriented Technologies is an object oriented data
+  analysis framework written in C++ by the CERN. Widely used in
+  high energy physics, but also in other data analysis applications. It
+  contains the CINT C/C++ interpreter and many classes such as
+  statistics, serialization, optimization, linear algebra, graphics,
+  GUI toolkit, and a complete visualization framework.
+</longdescription>
+<use>
+  <flag name="cint7">Build the *experimental* new C++ interpretor CINT7</flag>
+  <flag name="clarens">
+    Buld the Clarens and PEAC plug-ins, to use in a GRID enabled
+    analysis.</flag>
+  <flag name="geant4">Build the <pkg>sci-physics/geant</pkg> (GEANT4) navigator</flag>
+  <flag name="math">Build all math related libraries plugins, needs <pkg>sci-libs/gsl</pkg> </flag>
+  <flag name="pythia6">
+    Builds the interface to Pythia-6 (<pkg>sci-physics/pythia</pkg>)
+    high energy physics generation events library
+  </flag>
+  <flag name="pythia8">
+    Builds the interface to Pythia-8 (<pkg>sci-physics/pythia</pkg>)
+    high energy physics generation events library
+  </flag>
+  <flag name="reflex">Builds the reflection database for the C++ interpretor </flag>
+  <flag name="xrootd">Build the xrootd low latency file server</flag>
+</use>
+</pkgmetadata>