Reapplied portability changes, from changesets by kent, joerg and msvensson

mysys/base64.c:
  Portability change for SCO/HP, compiler don't like
  doing pointer arithmetic on void* variable
include/my_bitmap.h:
  "inline" functions (especially in header files) should be declared "static",
  or else we may get "multiply defined" when they are used in several modules.
  (Solaris compiler problem)
sql/handler.h:
  Compatibility change for AIX compiler
storage/bdb/Makefile.in:
  Added bdb "sequence" directory to "make dist"
cmd-line-utils/readline/complete.c:
  Avoid FreeBSD 5.3 problems including <sys/file.h>
mysql-test/t/disabled.def:
  Disable compress.test for now
storage/bdb/build_unix/.IGNORE_ME:
  File that is copied to prevent empty directories in source TAR

cmd-line-utils/readline/complete.c

@@ -33,7 +33,8 @@
 
 #include <fcntl.h>
 
-#if defined (HAVE_SYS_FILE_H)
+/* FreeBSD 5.3 will not declare u_int in sys/types.h, file.h needs it */
+#if defined (HAVE_SYS_FILE_H) && !defined(__FreeBSD__)
 #  include <sys/file.h>
 #endif