Changed startup message to give information about skin and core separately.
Added "version" and "copyright_author" fields for skins to supply.

Now startup message looks something like this:

==12698== cachegrind, an I1/D1/L2 cache profiler for x86-linux.
==12698== Copyright (C) 2002, and GNU GPL'd, by Nicholas Nethercote.
==12698== Built with valgrind-HEAD, a program execution monitor.
==12698== Copyright (C) 2000-2002, and GNU GPL'd, by Julian Seward.
==12698== Estimated CPU clock rate is 1422 MHz
==12698== For more details, rerun with: -v

The skin can specify a version number, but the skins that will be distributed
with Valgrind don't.

Also changed "x86 GNU/Linux" to the wicked "x86-linux" at Julian's request.

Updated default regression test filter to handle this new startup message.

----

Also moved the skin's name, description, etc., fields out of VG_(needs) into a
new struct VG_(details), since they are logically quite different to the needs.
Did a little code formatting, etc., for this.  Updated skin docs
correspondingly, too.

Also renamed the need `run_libc_freeres' --> `libc_freeres' so it's a noun
phrase rather than a verb phrase.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1172 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_mylibc.c b/coregrind/vg_mylibc.c
index d6bb58c..c6c158c 100644
--- a/coregrind/vg_mylibc.c
+++ b/coregrind/vg_mylibc.c
@@ -1008,7 +1008,7 @@
 
 void VG_(skin_assert_fail) ( Char* expr, Char* file, Int line, Char* fn )
 {
-   assert_fail(expr, VG_(needs).name, VG_(needs).bug_reports_to, 
+   assert_fail(expr, VG_(details).name, VG_(details).bug_reports_to, 
                file, line, fn);
 }
 
@@ -1032,7 +1032,7 @@
 
 void VG_(skin_panic) ( Char* str )
 {
-   panic(VG_(needs).name, VG_(needs).bug_reports_to, str);
+   panic(VG_(details).name, VG_(details).bug_reports_to, str);
 }
 
 /* ---------------------------------------------------------------------