Fix build with BR2_ENABLE_DEBUG=yes, no need for expert mode anymore

Otherwise configure issues this error message:
configure: error: --enable-debug cannot be used in conjunction with --enable-expert-mode

Downloaded from Gentoo:
http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/dev-libs/beecrypt/files/beecrypt-4.2.1-build-system.patch?revision=1.2&view=markup

This patch also removes the hard-coded CFLAGS provided by beecrypt in favour
of the CFLAGS provided by buildroot.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

--- beecrypt-4.2.1/configure.ac
+++ beecrypt-4.2.1/configure.ac
@@ -11,7 +11,7 @@
 
 # Checks for package options
 AC_ARG_ENABLE(expert-mode, [  --enable-expert-mode      follow user-defined CFLAGS settings [[default=no]]],[
-  ac_enable_expert_mode=yes
+  ac_enable_expert_mode=$enableval
   ],[
   if test "X$CFLAGS" != "X"; then
     echo "enabling expert mode"
@@ -25,7 +25,7 @@
   if test "$ac_enable_expert_mode" = yes; then
     AC_MSG_ERROR([--enable-debug cannot be used in conjunction with --enable-expert-mode])
   fi
-  ac_enable_debug=yes
+  ac_enable_debug=$enableval
   ],[
   ac_enable_debug=no
   ])
@@ -456,7 +456,7 @@
       ac_cv_python_include="-I`$PYTHON -c 'import distutils.sysconfig; print distutils.sysconfig.get_python_inc()'`"
     ])
     AC_CACHE_CHECK([where to install python libraries], ac_cv_python_libdir, [
-      ac_cv_python_libdir=`$PYTHON -c 'import distutils.sysconfig; print distutils.sysconfig.get_python_lib()'`
+      ac_cv_python_libdir=`$PYTHON -c 'import distutils.sysconfig; print distutils.sysconfig.get_python_lib(1, 0)'`
     ])
   fi
 fi
--- beecrypt-4.2.1/acinclude.m4
+++ beecrypt-4.2.1/acinclude.m4
@@ -498,15 +498,6 @@ AC_DEFUN([BEE_GNU_CC],[
     AC_SUBST(OPENMP_LIBS,"-lgomp")
   fi
   case $bc_target_arch in
-  x86_64 | athlon64 | athlon-fx | k8 | opteron | em64t | nocona)
-    CC="$CC -m64"
-    ;;
-  i[[3456]]86 | \
-  pentium* | \
-  athlon*)
-    CC="$CC -m32"
-    CCAS="$CCAS -m32"
-    ;;
   ia64)
     case $target_os in
     # HP/UX on Itanium needs to be told that a long is 64-bit!
@@ -525,17 +516,8 @@ AC_DEFUN([BEE_GNU_CC],[
     aix*)
       CC="$CC -maix64"
       ;;
-    linux*)
-      CC="$CC -m64"
-      ;;
     esac
     ;;
-  sparc | sparcv8*)
-    CC="$CC -m32"
-    ;;
-  sparc64 | sparcv9*)
-    CC="$CC -m64"
-    ;;
   esac
   # Certain platforms needs special flags for multi-threaded code
   if test "$ac_enable_threads" = yes; then
@@ -646,14 +646,6 @@ dnl  BEE_GNU_CXX
 AC_DEFUN([BEE_GNU_CXX],[
   AC_REQUIRE([AC_PROG_CXX])
   case $bc_target_arch in
-  x86_64 | athlon64 | athlon-fx | k8 | opteron | em64t | nocona | core2)
-    CXX="$CXX -m64"
-    ;;
-  i[[3456]]86 | \
-  pentium* | \
-  athlon*)
-    CXX="$CXX -m32"
-    ;;
   ia64)
     case $target_os in
     # HP/UX on Itanium needs to be told that a long is 64-bit!
@@ -672,17 +664,8 @@ AC_DEFUN([BEE_GNU_CXX],[
     aix*)
       CXX="$CXX -maix64"
       ;;
-    linux*)
-      CXX="$CXX -m64"
-      ;;
     esac
     ;;
-  sparc | sparcv8*)
-    CXX="$CXX -m32"
-    ;;
-  sparc64 | sparcv9*)
-    CXX="$CXX -m64"
-    ;;
   esac
   # Certain platforms needs special flags for multi-threaded code
   if test "$ac_enable_threads" = yes; then
--- beecrypt-4.2.1/java/Makefile.am
+++ beecrypt-4.2.1/java/Makefile.am
@@ -26,7 +26,7 @@
 
 INCLUDES = -I$(top_srcdir)/include
 
-libaltdir=$(prefix)/lib@LIBALT@
+libaltdir=$(libdir)
 
 libalt_LTLIBRARIES = libbeecrypt_java.la
 
--- beecrypt-4.2.1/acinclude.m4
+++ beecrypt-4.2.1/acinclude.m4
@@ -1589,20 +1589,5 @@
   AC_SUBST(TYPEDEF_BC_THREADID_T,$bc_typedef_bc_threadid_t)
   ])
-
-AH_BOTTOM([
-#if ENABLE_THREADS
-# ifndef _REENTRANT
-#  define _REENTRANT
-# endif
-# if LINUX
-#  define _LIBC_REENTRANT
-# endif
-#else
-# ifdef _REENTRANT
-#  undef _REENTRANT
-# endif
-#endif
-])
 
 
 dnl  BEE_THREAD_LOCAL_STORAGE
@@ -1623,7 +1609,5 @@
   ])
 
 AH_BOTTOM([
-#if !ENABLE_THREAD_LOCAL_STORAGE
-# define __thread
-#endif
+#include "config.threads.h"
 ])
--- beecrypt-4.2.1/config.threads.h
+++ beecrypt-4.2.1/config.threads.h
@@ -0,0 +1,16 @@
+#if ENABLE_THREADS
+# ifndef _REENTRANT
+#  define _REENTRANT
+# endif
+# if LINUX
+#  define _LIBC_REENTRANT
+# endif
+#else
+# ifdef _REENTRANT
+#  undef _REENTRANT
+# endif
+#endif
+
+#if !ENABLE_THREAD_LOCAL_STORAGE
+# define __thread
+#endif