[svn-r17785] Description:

	Further refactor v2 B-tree code to bring it closer to modern data
structure designed in the library, mainly by introducing a H5B2_t type so that
the v2 B-tree could be held open, but not require the B-tree header to be
protected the whole time.  A few other minor tweaks as well.

	Also, remove unused 'dirty' flag from fractal heap header.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.6.1 (amazon) in debug mode
        Mac OS X/32 10.6.1 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode

1 files changed, 4 insertions, 0 deletions

diff --git a/src/H5B2private.h b/src/H5B2private.h
index e99def0..481f910 100644
--- a/src/H5B2private.h
+++ b/src/H5B2private.h
@@ -116,6 +116,10 @@ typedef struct H5B2_stat_t {
     hsize_t nrecords;          /* Number of records */
 } H5B2_stat_t;
 
+/* v2 B-tree info (forward decl - defined in H5B2pkg.h) */
+typedef struct H5B2_t H5B2_t;
+
+
 /*****************************/
 /* Library-private Variables */
 /*****************************/