cc/gcc: add option to compile against static libstdc++, for gcc-4.4 and newer

Idea and know-how taken from CodeSourcery build script.

Normal build:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb77f3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb76e8000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb75a1000)
libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb757a000)
/lib/ld-linux.so.2 (0xb77f4000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb755c000)

CC_STATIC_LIBSTDCXX=y:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb7843000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb76e6000)
/lib/ld-linux.so.2 (0xb7844000)

I made CC_STATIC_LIBSTDCXX default=y since I think
it is always desirable.

Signed-off-by: Johannes Stezenbach <js@sig21.net>

 Signed-off-by: dank@kegel.com

 Raising the size of the hash table is a noticable win when linking 

 at least one large app.  

 There was a patch,

 http://sources.redhat.com/ml/binutils/2004-06/msg00165.html

 to do this dynamically.  No idea why that didn't make it in.

 So this tiny change to raise the default size is just

 a stopgap for now.

 --- binutils-2.16.1/bfd/hash.c.old	2006-03-02 23:01:39.000000000 -0800

 +++ binutils-2.16.1/bfd/hash.c	2006-03-02 23:01:58.000000000 -0800

 @@ -300,7 +300,7 @@

  */

  /* The default number of entries to use when creating a hash table.  */

 -#define DEFAULT_SIZE 4051

 +#define DEFAULT_SIZE 32749

  static size_t bfd_default_hash_table_size = DEFAULT_SIZE;

  /* Create a new hash table, given a number of entries.  */