BeOS compile hints, also added to the FAQ-o-Matic

doc/install/hints/BeOS

+BeOS Hints
+
+Latest: http://www.openldap.org/faq/index.cgi?file=18
+
+OpenLDAP has been tested with BeOS R4 x86 using GDBM (downloadable from a
+geekgadgets mirror). All tools, daemons and libraries build and work,
+however the BeOS threads are not yet supported.
+
+Help with thread support and testing on PPC is appreciated (and needed).